update rubocop github action

.github/workflows/rubocop.yml

@@ -1,2 +1,13 @@
-- name: Rubocop checks
-  uses: gimenete/[email protected]
+name: Rubocop
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Rubocop Linter Action
+      uses: andrewmcodes/[email protected]
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}