ci: Disable publishing snapshot to Github Packages (Flank#1031)

Author: piotradamczyk5

.github/workflows/release.yml

@@ -100,6 +100,7 @@ jobs:
 
     - name: Gradle Upload to GitHub packages
       uses: eskatos/gradle-command-action@v1
+      if: startsWith(github.ref, 'refs/tags/v')
       with:
         gradle-executable: "./test_runner/gradlew"
         arguments: "-p test_runner publish -PGITHUB_TOKEN=${{ secrets.GITHUB_TOKEN }}"