chore: upgrade diff dependency to v4.0.1 (#4852)

Author: akshayas

package.json

@@ -33,7 +33,7 @@
         "builtin-modules": "^1.1.1",
         "chalk": "^2.3.0",
         "commander": "^2.12.1",
-        "diff": "^3.5.0",
+        "diff": "^4.0.1",
         "glob": "^7.1.1",
         "js-yaml": "^3.13.1",
         "minimatch": "^3.0.4",

yarn.lock

@@ -515,11 +515,16 @@ deprecation@^1.0.1:
   resolved "https://registry.yarnpkg.com/deprecation/-/deprecation-1.0.1.tgz#2df79b79005752180816b7b6e079cbd80490d711"
   integrity sha512-ccVHpE72+tcIKaGMql33x5MAjKQIZrk+3x2GbJ7TeraUCZWHoT+KSZpoC+JQFsUBlSTXUrBaGiF0j6zVTepPLg==
 
-[email protected], diff@^3.1.0, diff@^3.2.0, diff@^3.5.0:
+[email protected], diff@^3.1.0, diff@^3.2.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
   integrity sha512-A46qtFgd+g7pDZinpnwiRJtxbC1hpgf0uzP3iG89scHk0AUC7A1TGxf5OiiOUv/JMZR8GOt8hL900hV0bOy5xA==
 
+diff@^4.0.1:
+  version "4.0.1"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-4.0.1.tgz#0c667cb467ebbb5cea7f14f135cc2dba7780a8ff"
+  integrity sha512-s2+XdvhPCOF01LRQBC8hf4vhbVmI2CGS5aZnxLJlT5FtdhPCDFq80q++zK2KlrVorVDdL5BOGZ/VfLrVtYNF+Q==
+
 duplexer@~0.1.1:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/duplexer/-/duplexer-0.1.1.tgz#ace6ff808c1ce66b57d1ebf97977acb02334cfc1"