Reset changes for CI

Author: Anton Abramov

.github/workflows/ruby.yml

@@ -53,10 +53,6 @@ jobs:
       with:
         ruby-version: 3.2.2
         bundler-cache: true
-    - name: Update RubyGems
-      run: |
-        gem update --system 3.2.3
-        gem install bundler
     - name: Run tests
       run: bundle exec rake
     - run: gem uninstall -v '>= 2' -ax bundler || true