Update actions/github-script action to v8

Author: renovate[bot]

.github/workflows/deploy-complete.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: 💬 Post deploy info to PR
-        uses: actions/github-script@v7
+        uses: actions/github-script@v8
         with:
           script: |
             const prNumber = '${{ github.event.client_payload.pr_number }}';