ci: activate build.yml for testing

Author: joanise

.github/workflows/build.yml

@@ -3,9 +3,9 @@ name: Build and upload to PyPI
 on:
   workflow_dispatch:
   pull_request:
-  # push:
-  #   branches:
-  #     - main
+  push:
+    branches:
+      - dev.ej/cibuild
   release:
     types:
       - published