downgrade to v6

Author: Miepee

.github/workflows/pr_artifacts.yml

@@ -13,7 +13,7 @@ jobs:
     if: github.event.workflow_run.event == 'pull_request' && github.event.workflow_run.conclusion == 'success'
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/github-script@v7
+      - uses: actions/github-script@v6
         with:
           script: |
             const {owner, repo} = context.repo;