Bump execa from 5.1.1 to 9.5.3

Bumps [execa](https://github.com/sindresorhus/execa) from 5.1.1 to 9.5.3.
- [Release notes](https://github.com/sindresorhus/execa/releases)
- [Commits](sindresorhus/execa@v5.1.1...v9.5.3)

---
updated-dependencies:
- dependency-name: execa
  dependency-version: 9.5.3
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

dotcom-rendering/package.json

@@ -142,7 +142,7 @@
 		"eslint-plugin-ssr-friendly": "1.3.0",
 		"eslint-plugin-unicorn": "48.0.1",
 		"eslint-stats": "1.0.1",
-		"execa": "5.1.1",
+		"execa": "9.5.3",
 		"express": "4.21.2",
 		"find": "0.3.0",
 		"he": "1.2.0",