GCI make create release step only available on head

.github/workflows/dev-build-release.yml

@@ -39,6 +39,7 @@ jobs:
         run: chmod +x ./gradlew && ./gradlew build
 
       - name: Create Release
+        if: github.ref != 'refs/heads/master'
         uses: softprops/action-gh-release@v2
         with:
           name: '${{ github.ref_name }}: ${{ github.event.head_commit.message }} (${{ github.sha }})'