Merge pull request rails#37953 from yahonda/workaround_for_github_action_errors

Workaroud to address apt-get update at GitHub Actions

Author: kamipo

.github/workflows/rubocop.yml

@@ -14,6 +14,7 @@ jobs:
         ruby-version: 2.6.x
     - name: Install required package
       run: |
+        sudo rm -f /etc/apt/sources.list.d/dotnetdev.list /etc/apt/sources.list.d/microsoft-prod.list
         sudo apt-get update
         sudo apt-get install libmysqlclient-dev libpq-dev libsqlite3-dev libncurses5-dev
     - name: Cache gems