release only from main branch (#193)

* fix mypy issues

* revert

* release only from main branch

---------

Co-authored-by: [email protected] <[email protected]>

Author: adambalogh

.github/workflows/release.yml

@@ -2,6 +2,8 @@ name: Release
 
 on:
   workflow_dispatch:
+    branches:
+      - main
 
 permissions:
   contents: write