only upload tags to app store

.github/workflows/build.yml

@@ -6,6 +6,10 @@ jobs:
   release:
     runs-on: ${{ matrix.os }}
 
+# TODO
+#    env:
+#      is_tag: ${{ startsWith(github.ref, 'refs/tags/v') }}
+
     strategy:
       matrix:
         os: [macos-latest, ubuntu-latest, windows-latest]
@@ -57,7 +61,7 @@ jobs:
           API_KEY_ISSUER_ID: ${{ secrets.api_key_issuer_id }}
 
       - name: Upload to Mac App Store
-        if: startsWith(matrix.os, 'macos')
+        if: startsWith(matrix.os, 'macos') && startsWith(github.ref, 'refs/tags/v')
         run: |
           mkdir -p ~/.appstoreconnect/private_keys/
           echo '${{ secrets.api_key }}' > ~/.appstoreconnect/private_keys/AuthKey_${{ secrets.api_key_id }}.p8