Build(deps-dev): 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-lock.json

@@ -23,7 +23,7 @@
     "eslint-config-prettier": "^6.15.0",
     "eslint-plugin-node": "^11.1.0",
     "eslint-plugin-prettier": "^3.4.0",
-    "execa": "^4.1.0",
+    "execa": "^5.1.1",
     "get-port": "^5.1.1",
     "prettier": "^2.3.0",
     "qunit": "~2.11.3",