Add completion job so we can have dependabot auto-merge and required builds

Author: adamtheturtle

.github/workflows/ci.yml

@@ -197,3 +197,15 @@ jobs:
           fail_ci_if_error: true
           token: ${{ secrets.CODECOV_TOKEN }}
         if: ${{ github.event_name == 'pull_request' || github.event_name == 'push' }}
+
+  completion:
+    needs: build
+    runs-on: ubuntu-latest
+    if: always()  # Run even if one matrix job fails
+    steps:
+      - name: Check matrix job status
+        run: |-
+          if ! ${{ needs.build.result == 'success' }}; then
+            echo "One or more matrix jobs failed"
+            exit 1
+          fi