ci: do not run CI workflow if the changes are related only to documentation or GitHub Actions configuration (#314)

Author: martin-georgiev

.github/workflows/ci.yml

@@ -1,10 +1,16 @@
 name: CI
 
 on:
-  push:
-    branches: [ "main" ]
   pull_request:
     branches: [ "main" ]
+    paths-ignore:
+      - '.github/**'
+      - '**/*.md'
+  push:
+    branches: [ "main" ]
+    paths-ignore:
+      - '.github/**'
+      - '**/*.md'
 
 permissions:
   contents: read