feat(deps): bump actions/github-script from 4 to 5 (#415)

Bumps [actions/github-script](https://github.com/actions/github-script) from 4 to 5.
- [Release notes](https://github.com/actions/github-script/releases)
- [Commits](actions/github-script@v4...v5)

---
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/milestone.yml

@@ -25,7 +25,7 @@ jobs:
       statuses: none
 
     steps:
-      - uses: actions/github-script@v4
+      - uses: actions/github-script@v5
         with:
           script: |
             if (!context.payload.pull_request.merged) {