adding support for rubocop sarif

Author: Esity

.github/workflows/rubocop.yml

@@ -19,6 +19,10 @@ jobs:
       - name: Rubocop run --no-doc
         run: |
           bash -c "
-            rubocop --require code_scanning --format CodeScanning::SarifFormatter -o rubocop.sarif
+            bundle exec rubocop --require code_scanning --format CodeScanning::SarifFormatter -o rubocop.sarif
             [[ $? -ne 2 ]]
-          "
+          "
+      - name: Upload Sarif output
+        uses: github/codeql-action/upload-sarif@v1
+        with:
+          sarif_file: rubocop.sarif

Gemfile

@@ -2,6 +2,7 @@ source 'https://rubygems.org'
 
 gemspec
 group :test do
+  gem 'code-scanning-rubocop'
   gem 'rake'
   gem 'rspec'
   gem 'rspec_junit_formatter'