workflow/test: do not start if only unrelated files were changed

.github/workflows/test.yml

@@ -1,5 +1,16 @@
 name: Test
 on: [push, pull_request]
+  paths-ignore:
+    - 'docs/**'
+    - '**.md'
+    - 'radicale/web/README.md'
+    - 'radicale/web/internal_data/css/icons/credits.md'
+    - 'Dockerfile'
+    - 'Dockerfile.dev'
+    - 'config'
+    - 'rights'
+    - 'contrib/**'
+    - 'compose.yaml'
 
 jobs: