Bump actions/github-script from 5 to 6 (#18516)

Bumps [actions/github-script](https://github.com/actions/github-script) from 5 to 6.
- [Release notes](https://github.com/actions/github-script/releases)
- [Commits](actions/github-script@v5...v6)

---
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>

Author: dependabot[bot]

.github/workflows/issue-labels.yml

@@ -13,7 +13,7 @@ jobs:
     name: "Add 'classify'"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/github-script@v5
+      - uses: actions/github-script@v6
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |