Bump execa from 3.4.0 to 8.0.1

Bumps [execa](https://github.com/sindresorhus/execa) from 3.4.0 to 8.0.1.
- [Release notes](https://github.com/sindresorhus/execa/releases)
- [Commits](sindresorhus/execa@v3.4.0...v8.0.1)

---
updated-dependencies:
- dependency-name: execa
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package.json

@@ -54,7 +54,7 @@
     "eslint": "^6.8.0",
     "eslint-config-prettier": "^6.15.0",
     "eslint-plugin-prettier": "^3.4.0",
-    "execa": "^3.4.0",
+    "execa": "^8.0.1",
     "jest": "^26.6.3",
     "prettier": "^1.19.1",
     "release-plan": "^0.6.0",