Run CI on all branches and pull requests (#29)

Author: rareba

.github/workflows/ci.yaml

@@ -2,9 +2,7 @@ name: CI
 
 on:
   push:
-    branches: [master]
   pull_request:
-    branches: [master]
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}