Rewrite gha workflow using reusable actions

Author: archanaserver

.github/workflows/rubocop.yml

@@ -4,19 +4,12 @@ on:
   push:
     branches:
       - master
+
+concurrency:
+  group: ${{ github.ref_name }}
+  cancel-in-progress: true
+
 jobs:
   rubocop:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - name: Setup Ruby
-        uses: ruby/setup-ruby@v1
-        with:
-          ruby-version: 2.7
-          bundler-cache: true
-      - name: Setup rubocop
-        run: |
-          gem install bundler
-      - name: Execute rubocop
-        run: |
-          bundle exec rubocop
+    name: Rubocop
+    uses: theforeman/actions/.github/workflows/rubocop.yml@v0