Only publish on tags

Author: SAnCherepan

.github/workflows/release.yml

@@ -30,6 +30,7 @@ jobs:
         run: python -m build
 
       - name: Publish package
+        if: github.ref_type == 'tag'
         uses: pypa/gh-action-pypi-publish@27b31702a0e7fc50959f5ad993c78deac1bdfc29
         with:
           user: __token__