Bump actions/github-script from 4.1 to 5.1.0 (#135)

Bumps [actions/github-script](https://github.com/actions/github-script) from 4.1 to 5.1.0.
- [Release notes](https://github.com/actions/github-script/releases)
- [Commits](actions/github-script@v4.1...v5.1.0)

---
updated-dependencies:
- dependency-name: actions/github-script
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/approve_and_merge.yml

@@ -7,7 +7,7 @@ jobs:
     if: github.actor == 'dependabot[bot]'
     steps:
       - name: automerge
-        uses: actions/github-script@v4.1
+        uses: actions/github-script@v5.1.0
         with:
           github-token: "${{ secrets.GH_TOKEN }}"
           script: |