chore: bump actions/github-script from 7 to 8 (#3)

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

Author: dependabot[bot]

.github/workflows/maintenance.yml

@@ -41,7 +41,7 @@ jobs:
 
       - name: Open or update dead-link issue
         if: steps.dead-links.outputs.dead_count != '0'
-        uses: actions/github-script@v7
+        uses: actions/github-script@v8
         with:
           script: |
             const fs = require("fs");
@@ -91,7 +91,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Open monthly stale-entry review issue
-        uses: actions/github-script@v7
+        uses: actions/github-script@v8
         with:
           script: |
             const now = new Date().toISOString().slice(0, 10);