remove ACTIONS_ALLOW_UNSECURE_COMMANDS to see if it works with upgraded ruby/setup-ruby

Author: SarahAlidoost

.github/workflows/ci.yml

@@ -11,8 +11,6 @@ jobs:
     - uses: actions/checkout@v2
     - name: Setup Ruby
       uses: ruby/[email protected]
-      env:
-        ACTIONS_ALLOW_UNSECURE_COMMANDS: true
       with:
         ruby-version: 2.7
     - name: Cache Ruby deps