no chmod

Author: soutaro

.github/workflows/ruby.yml

@@ -123,8 +123,6 @@ jobs:
           bundler: none
       - name: Set working directory as safe
         run: git config --global --add safe.directory $(pwd)
-      - name: Set up permission
-        run: chmod -R o-w /opt/hostedtoolcache/Ruby
       - name: Update rubygems & bundler
         run: |
           ruby -v