ci: prevent double CI run on PR branches

Push trigger now only fires on main, development and production.
Feature branches are covered by the pull_request trigger alone,
so CI no longer runs twice when pushing to an open PR.

Author: devCluna

.github/workflows/ci.yml

@@ -2,9 +2,11 @@ name: CI
 
 on:
   push:
-    branches: ['**']
+    branches:
+      - main
+      - development
+      - production
   pull_request:
-    branches: ['**']
   workflow_call:
 
 jobs: