build(deps): bump actions/github-script from 7 to 8

Bumps [actions/github-script](https://github.com/actions/github-script) from 7 to 8.
- [Release notes](https://github.com/actions/github-script/releases)
- [Commits](actions/github-script@v7...v8)

---
updated-dependencies:
- dependency-name: actions/github-script
  dependency-version: '8'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/auto-approve-dependabot-prs.yml

@@ -10,7 +10,7 @@ jobs:
     if: github.actor == 'dependabot[bot]' || github.actor == 'dependabot-preview[bot]'
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/github-script@v7
+    - uses: actions/github-script@v8
       with:
         github-token: ${{ secrets.GITHUB_TOKEN }}
         script: |

.github/workflows/build-and-test.yml

@@ -120,7 +120,7 @@ jobs:
       working-directory: gitgitgadget
 
     - name: Clean up two day old branches and PRs
-      uses: actions/github-script@v7
+      uses: actions/github-script@v8
       id: clean-up
       with:
         github-token: ${{ env.GGG_TOKEN }}