ci(test.yml): assure 'test' workflow fails if one of its dependencies fail (#61)

context here: octokit/auth-oauth-device.js#74

Author: oscard0m

templates/github-actions/test.yml

@@ -28,5 +28,8 @@ jobs:
   test:
     runs-on: ubuntu-latest
     needs: test_matrix
+    if: ${{ always() }}
     steps:
+      - run: exit 1
+        if: ${{ needs.test_matrix.result != 'success' }}
       - run: echo ok