ci(lint): adjust triggering logic to reduce wasted runs on main, now …

…just pr [skip ci]

.github/workflows/lint.yml

@@ -1,16 +1,9 @@
 ---
 name: lint
 on:
-  # Run CI against all pushes (direct commits, also merged PRs), Pull Requests
-  # push:
-  #   branches:
-  #     - main
-  #     - stable-*
   pull_request:
-  # Run CI once per day (at 06:00 UTC)
-  # This ensures that even if there haven't been commits that we are still testing against latest version of ansible-test for each ansible-base version
-  # schedule:
-  #   - cron: '0 6 * * *'
+    branches:
+      - main
   workflow_dispatch:
   workflow_call: