chore(deps): update cgrindel/gha_join_jobs digest to 8a9736c

Author: renovate[bot]

.github/workflows/workflow.yaml

@@ -158,6 +158,6 @@ jobs:
       - test-examples
     if: ${{ always() }}
     steps:
-      - uses: cgrindel/gha_join_jobs@794a2d117251f22607f1aab937d3fd3eaaf9a2f5 # v1
+      - uses: cgrindel/gha_join_jobs@8a9736c29a7e5ebd9f3af2870f59cb6d563b6659 # v1
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}