Update gempush.yml

Author: alekpopovic

.github/workflows/gempush.yml

@@ -19,6 +19,9 @@ jobs:
       uses: actions/setup-ruby@v1
       with:
         version: 2.6.x
+        
+    - name: Rubocop checks
+    uses: gimenete/rubocop-action@1.0
 
     - name: Publish to GPR
       run: |