chore(deps): update actions/github-script action to v8

Author: renovate[bot]

sync-root/.github/workflows/terraform-validation.yaml

@@ -64,7 +64,7 @@ jobs:
           terraform test
 
       - name: Comment CI results
-        uses: actions/github-script@v7
+        uses: actions/github-script@v8
         if: github.event_name == 'pull_request' || always()
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}