only run release workflow on tag creation

Author: bckohan

.github/workflows/release.yml

@@ -15,6 +15,7 @@ jobs:
 
   build:
     name: Build distribution 📦
+    if: startsWith(github.ref, 'refs/tags/')  # only publish on tag pushes
     runs-on: ubuntu-latest
 
     steps:
@@ -37,7 +38,6 @@ jobs:
   publish-to-pypi:
     name: >-
       Publish Python 🐍 distribution 📦 to PyPI
-    if: startsWith(github.ref, 'refs/tags/')  # only publish to PyPI on tag pushes
     needs:
     - build
     runs-on: ubuntu-latest
@@ -100,7 +100,6 @@ jobs:
 
   publish-to-testpypi:
     name: Publish Python 🐍 distribution 📦 to TestPyPI
-    if: startsWith(github.ref, 'refs/tags/')  # only publish to PyPI on tag pushes
     needs:
     - build
     runs-on: ubuntu-latest