Update manual buidl workflow

Author: tsterbak

.github/workflows/manual-build.yml

@@ -66,6 +66,7 @@ jobs:
       run: ls -R
     - name: Create release
       uses: dciborow/action-github-releases@v1.0.1
+      if: startsWith(github.ref, 'refs/tags/')
       with:
         repo_token: ${{ secrets.GITHUB_TOKEN }}
         prerelease: false