test: minimal workflow to isolate startup failure

Author: constk

.github/workflows/minimal-test.yml

@@ -0,0 +1,11 @@
+name: Minimal Test
+
+on:
+  push:
+    branches: [test/minimal-workflow]
+
+jobs:
+  hello:
+    runs-on: ubuntu-latest
+    steps:
+      - run: echo "hello"