Bump actions/github-script from 6.0.0 to 6.1.0

Bumps [actions/github-script](https://github.com/actions/github-script) from 6.0.0 to 6.1.0.
- [Release notes](https://github.com/actions/github-script/releases)
- [Commits](actions/github-script@9ac0880...7a5c598)

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

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

.github/workflows/milestone.yaml

@@ -23,7 +23,7 @@ jobs:
       statuses: none
 
     steps:
-      - uses: actions/github-script@9ac08808f993958e9de277fe43a64532a609130e # v6.0.0
+      - uses: actions/github-script@7a5c598405937d486b0331594b5da2b14db670da # v6.0.0
         with:
           script: |
             if (!context.payload.pull_request.merged) {