Upgrade dependency to reduce slug size

The latest fastboot release removes some extraneous files that were
inflating our slug size. This is the minimal command I found that
bumped the version:

`yarn upgrade fastboot fastboot-app-server`

Author: jtgeibel

yarn.lock

@@ -2781,9 +2781,9 @@ aws-sign2@~0.7.0:
   integrity sha1-tG6JCTSpWR8tL2+G1+ap8bP+dqg=
 
 aws4@^1.8.0:
-  version "1.10.1"
-  resolved "https://registry.yarnpkg.com/aws4/-/aws4-1.10.1.tgz#e1e82e4f3e999e2cfd61b161280d16a111f86428"
-  integrity sha512-zg7Hz2k5lI8kb7U32998pRRFin7zJlkfezGJjUc2heaD4Pw2wObakCDVzkKztTm/Ln7eiVvYsjqak0Ed4LkMDA==
+  version "1.11.0"
+  resolved "https://registry.yarnpkg.com/aws4/-/aws4-1.11.0.tgz#d61f46d83b2519250e2784daf5b09479a8b41c59"
+  integrity sha512-xh1Rl34h6Fi1DC2WWKfxUTVqRsNnr6LsKz2+hfwDxQJWmrx8+c7ylaqBMcHfl1U1r2dsifOvKX3LQuLNZ+XSvA==
 
 [email protected]:
   version "3.5.5"
@@ -5285,11 +5285,16 @@ [email protected]:
   resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.3.1.tgz#e7e0a1f9ef43b4c8ba925c5c5a96e806d16873bb"
   integrity sha1-5+Ch+e9DtMi6klxcWpboBtFoc7s=
 
-[email protected], cookie@^0.4.0:
+[email protected]:
   version "0.4.0"
   resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.4.0.tgz#beb437e7022b3b6d49019d088665303ebe9c14ba"
   integrity sha512-+Hp8fLp57wnUSt0tY0tHEXh4voZRDnoIrZPqlo3DPiI4y9lwg/jqx+1Om94/W6ZaPDOUbnjOt/99w66zk+l1Xg==
 
+cookie@^0.4.0:
+  version "0.4.1"
+  resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.4.1.tgz#afd713fe26ebd21ba95ceb61f9a8116e50a537d1"
+  integrity sha512-ZwrFkGJxUR3EIoXtO+yVE69Eb7KlixbaeAWfBQB9vVsNn/o+Yw69gBWSSDK825hQNdN+wF8zELf3dFNl/kxkUA==
+
 copy-concurrently@^1.0.0:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/copy-concurrently/-/copy-concurrently-1.0.5.tgz#92297398cae34937fcafd6ec8139c18051f0b5e0"
@@ -5632,7 +5637,7 @@ [email protected], debug@^2.1.0, debug@^2.1.1, debug@^2.1.3, debug@^2.2.0, debug@^2.3.
   dependencies:
     ms "2.0.0"
 
-debug@4, debug@^4.0.0, debug@^4.0.1, debug@^4.1.0, debug@^4.1.1, debug@^4.2.0:
+debug@4, debug@^4.0.0, debug@^4.0.1, debug@^4.1.0, debug@^4.2.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/debug/-/debug-4.2.0.tgz#7f150f93920e94c58f5574c2fd01a3110effe7f1"
   integrity sha512-IX2ncY78vDTjZMFUdmsvIRFY2Cf4FnD0wRs+nQwJU8Lu99/tPFdb0VybiiMTPe3I6rQmwsqQqRBvxU+bZ/I8sg==
@@ -5653,6 +5658,13 @@ debug@^3.0.1, debug@^3.1.0, debug@^3.1.1:
   dependencies:
     ms "^2.1.1"
 
+debug@^4.1.1:
+  version "4.3.1"
+  resolved "https://registry.yarnpkg.com/debug/-/debug-4.3.1.tgz#f0d229c505e0c6d8c49ac553d1b13dc183f6b2ee"
+  integrity sha512-doEwdvm4PCeK4K3RQN2ZC2BYUBaxwLARCqZmMjtF8a51J2Rb0xpVloFRnCODwqjpwnAoao4pelN8l3RJdv3gRQ==
+  dependencies:
+    ms "2.1.2"
+
 debug@~4.1.0:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.1.tgz#3b72260255109c6b589cee050f1d516139664791"
@@ -7800,11 +7812,16 @@ extract-zip@^2.0.0:
   optionalDependencies:
     "@types/yauzl" "^2.9.1"
 
-[email protected], extsprintf@^1.2.0:
+[email protected]:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/extsprintf/-/extsprintf-1.3.0.tgz#96918440e3041a7a414f8c52e3c574eb3c3e1e05"
   integrity sha1-lpGEQOMEGnpBT4xS48V06zw+HgU=
 
+extsprintf@^1.2.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/extsprintf/-/extsprintf-1.4.0.tgz#e2689f8f356fad62cca65a3a91c5df5f9551692f"
+  integrity sha1-4mifjzVvrWLMplo6kcXfX5VRaS8=
+
 fake-xml-http-request@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/fake-xml-http-request/-/fake-xml-http-request-2.1.1.tgz#279fdac235840d7a4dff77d98ec44bce9fc690a6"
@@ -7904,9 +7921,9 @@ fastboot-express-middleware@^2.0.0:
     request "^2.81.0"
 
 fastboot-express-middleware@^3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/fastboot-express-middleware/-/fastboot-express-middleware-3.0.0.tgz#bb4a037f1a88492439052d430e3bcc6eddac65c8"
-  integrity sha512-HWdDj/IJ26QPC30Mi56LHZdcJ4DZctru8W4PHAm359eieEkPemx2I3iDZzfmbw6rD8LUjec+NVauVvrLe3Xfuw==
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/fastboot-express-middleware/-/fastboot-express-middleware-3.1.0.tgz#ba21216e776e2e4d72a3305630d40b6fe5c3f104"
+  integrity sha512-YgADE+cF8pr7BfPI6oZg4CSsGGeHyl7a2GD5p6tUT1qX/OutGeSCI1CDwKTFbQLoNExCvX0f1odUgTY/k37RRw==
   dependencies:
     chalk "^2.0.1"
     fastboot "^3.1.1"
@@ -7934,9 +7951,9 @@ fastboot@^2.0.0, fastboot@^2.0.1:
     source-map-support "^0.5.0"
 
 fastboot@^3.1.1:
-  version "3.1.1"
-  resolved "https://registry.yarnpkg.com/fastboot/-/fastboot-3.1.1.tgz#95306636f4a9dae1bc237142e3cca0d337b419c6"
-  integrity sha512-qQ7zXzqJ2+qyM9Uy4rXzeOc/Qtk2o9Y9rKvHCrZoRWneOEwsH+/8bN56NP4PUgbMWtzYtWBFwhwGBuC6xPJA3w==
+  version "3.1.2"
+  resolved "https://registry.yarnpkg.com/fastboot/-/fastboot-3.1.2.tgz#c10a97be3a61fbbf9e4bd8abc43373e8739d1787"
+  integrity sha512-yvhJfIRd4wWWACk+qjJxQI+WBIQ+pyQyp0/fxrQyA/cYJgZAXOHb+22zXJbJXaPku3fHS+gBl7crwovIkl8bhQ==
   dependencies:
     chalk "^3.0.0"
     cookie "^0.4.0"
@@ -9013,7 +9030,7 @@ [email protected]:
   resolved "https://registry.yarnpkg.com/http-cache-semantics/-/http-cache-semantics-3.8.1.tgz#39b0e16add9b605bf0a9ef3d9daaf4843b4cacd2"
   integrity sha512-5ai2iksyV8ZXmnZhHH4rWPoxxistEexSi5936zIQ1bnNTW5VnA85B6P/VpXiRM017IgRvb2kKo1a//y+0wSp3w==
 
-[email protected], http-errors@~1.7.2:
+[email protected]:
   version "1.7.2"
   resolved "https://registry.yarnpkg.com/http-errors/-/http-errors-1.7.2.tgz#4f5029cf13239f31036e5b2e55292bcfbcc85c8f"
   integrity sha512-uUQBt3H/cSIVfch6i1EuPNy/YsRSOUBXTVfZ+yR7Zjez3qjBz6i9+i4zjNaoqcoFVI4lQJ5plg63TvGfRSDCRg==
@@ -9034,6 +9051,17 @@ http-errors@~1.6.2:
     setprototypeof "1.1.0"
     statuses ">= 1.4.0 < 2"
 
+http-errors@~1.7.2:
+  version "1.7.3"
+  resolved "https://registry.yarnpkg.com/http-errors/-/http-errors-1.7.3.tgz#6c619e4f9c60308c38519498c14fbb10aacebb06"
+  integrity sha512-ZTTX0MWrsQ2ZAhA1cejAwDLycFsd7I7nVtnkT3Ol0aqodaKW+0CTZDQ1uBv5whptCnc8e8HeRRJxRs0kmm/Qfw==
+  dependencies:
+    depd "~1.1.2"
+    inherits "2.0.4"
+    setprototypeof "1.1.1"
+    statuses ">= 1.5.0 < 2"
+    toidentifier "1.0.0"
+
 http-parser-js@>=0.5.1:
   version "0.5.2"
   resolved "https://registry.yarnpkg.com/http-parser-js/-/http-parser-js-0.5.2.tgz#da2e31d237b393aae72ace43882dd7e270a8ff77"
@@ -9205,7 +9233,7 @@ inflight@^1.0.4:
     once "^1.3.0"
     wrappy "1"
 
-inherits@2, inherits@^2.0.1, inherits@^2.0.3, inherits@^2.0.4, inherits@~2.0.1, inherits@~2.0.3:
+inherits@2, inherits@2.0.4, inherits@^2.0.1, inherits@^2.0.3, inherits@^2.0.4, inherits@~2.0.1, inherits@~2.0.3:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz#0fa2c64f932917c3433a0ded55363aae37416b7c"
   integrity sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==
@@ -10725,11 +10753,16 @@ miller-rabin@^4.0.0:
     bn.js "^4.0.0"
     brorand "^1.0.1"
 
-[email protected], "mime-db@>= 1.43.0 < 2":
+[email protected]:
   version "1.44.0"
   resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.44.0.tgz#fa11c5eb0aca1334b4233cb4d52f10c5a6272f92"
   integrity sha512-/NOTfLrsPBVeH7YtFPgsVWveuL+4SjjYxaQ1xtM1KMFj7HdxlBlxeyNLzhyJVx7r4rZGJAZ/6lkKCitSc/Nmpg==
 
+"mime-db@>= 1.43.0 < 2":
+  version "1.45.0"
+  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.45.0.tgz#cceeda21ccd7c3a745eba2decd55d4b73e7879ea"
+  integrity sha512-CkqLUxUk15hofLoLyljJSrukZi8mAtgd+yE5uO4tqRZsdsAJKv0O+rFMhVDRJgozy+yG6md5KwuXhD4ocIoP+w==
+
 mime-types@^2.1.12, mime-types@^2.1.18, mime-types@^2.1.26, mime-types@~2.1.19, mime-types@~2.1.24:
   version "2.1.27"
   resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.27.tgz#47949f98e279ea53119f5722e0f34e529bec009f"
@@ -15057,11 +15090,16 @@ write-file-atomic@^3.0.0:
     signal-exit "^3.0.2"
     typedarray-to-buffer "^3.1.5"
 
-ws@^7.1.2, ws@^7.2.3:
+ws@^7.1.2:
   version "7.3.1"
   resolved "https://registry.yarnpkg.com/ws/-/ws-7.3.1.tgz#d0547bf67f7ce4f12a72dfe31262c68d7dc551c8"
   integrity sha512-D3RuNkynyHmEJIpD2qrgVkc9DQ23OrN/moAwZX4L8DfvszsJxpjQuUq3LMx6HoYji9fbIOBY18XWBsAux1ZZUA==
 
+ws@^7.2.3:
+  version "7.4.1"
+  resolved "https://registry.yarnpkg.com/ws/-/ws-7.4.1.tgz#a333be02696bd0e54cea0434e21dcc8a9ac294bb"
+  integrity sha512-pTsP8UAfhy3sk1lSk/O/s4tjD0CRwvMnzvwr4OKGX7ZvqZtUyx4KIJB5JWbkykPoc55tixMGgTNoh3k4FkNGFQ==
+
 ws@~6.1.0:
   version "6.1.4"
   resolved "https://registry.yarnpkg.com/ws/-/ws-6.1.4.tgz#5b5c8800afab925e94ccb29d153c8d02c1776ef9"