Bump execa from 4.1.0 to 5.1.1

Bumps [execa](https://github.com/sindresorhus/execa) from 4.1.0 to 5.1.1.
- [Release notes](https://github.com/sindresorhus/execa/releases)
- [Commits](sindresorhus/execa@v4.1.0...v5.1.1)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

package.json

@@ -39,7 +39,7 @@
     "eslint-config-prettier": "^6.15.0",
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-prettier": "^3.4.0",
-    "execa": "^4.0.3",
+    "execa": "^5.1.1",
     "prettier": "^2.3.2",
     "qunit": "^2.16.0",
     "release-it": "^14.10.1",

yarn.lock

@@ -2954,7 +2954,7 @@ [email protected]:
     signal-exit "^3.0.2"
     strip-final-newline "^2.0.0"
 
-[email protected]:
+[email protected], execa@^5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/execa/-/execa-5.1.1.tgz#f80ad9cbf4298f7bd1d4c9555c21e93741c411dd"
   integrity sha512-8uSpZZocAZRBAPIEINJj3Lo9HyGitllczc27Eh5YYojjMFMn8yHMDMaUHE2Jqfq05D/wucwI4JGURyXt1vchyg==