ci: enable release-please workflow on push to main branch

Activate the release-please GitHub Action to trigger on pushes to the main branch instead of manual workflow dispatch. This change automates release PR creation and version bumping on every main branch update, streamlining the release process.

Author: koki-develop

.github/workflows/release-please.yml

@@ -7,10 +7,9 @@ defaults:
 permissions: {}
 
 on:
-  workflow_dispatch:
-  # push:
-  #   branches:
-  #     - main
+  push:
+    branches:
+      - main
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}