Update makefile.yml (again) to run regression on all pushes

.github/workflows/makefile.yml

@@ -4,9 +4,8 @@ on:
   # Run using manual triggers from GitHub UI:
   # https://docs.github.com/en/actions/managing-workflow-runs/manually-running-a-workflow
   workflow_dispatch: {}
-  # Run on pushes to the main branch only:
-  push:
-    branches: [ "main" ]
+  # Run on every push:
+  push: {}
   # Run on every pull request:
   pull_request: {}