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](https://github.com/actions/github-script/compare/v7...v8)

Signed-off-by: Junio C Hamano <gitster@pobox.com>

.github/workflows/main.yml

diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index fa7c60f..aa6bce6 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -63,7 +63,7 @@
           echo "skip_concurrent=$skip_concurrent" >>$GITHUB_OUTPUT
       - name: skip if the commit or tree was already tested
         id: skip-if-redundant
-        uses: actions/github-script@v7
+        uses: actions/github-script@v8
         if: steps.check-ref.outputs.enabled == 'yes'
         with:
           github-token: ${{secrets.GITHUB_TOKEN}}