/usr/lib/ruby/vendor_ruby/ is in ruby-dalli 2.7.4-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/ruby/vendor_ruby/active_support/
/usr/lib/ruby/vendor_ruby/active_support/cache/
/usr/lib/ruby/vendor_ruby/active_support/cache/dalli_store.rb
/usr/lib/ruby/vendor_ruby/dalli/
/usr/lib/ruby/vendor_ruby/dalli/server.rb
/usr/lib/ruby/vendor_ruby/dalli/client.rb
/usr/lib/ruby/vendor_ruby/dalli/socket.rb
/usr/lib/ruby/vendor_ruby/dalli/cas/
/usr/lib/ruby/vendor_ruby/dalli/cas/client.rb
/usr/lib/ruby/vendor_ruby/dalli/ring.rb
/usr/lib/ruby/vendor_ruby/dalli/options.rb
/usr/lib/ruby/vendor_ruby/dalli/railtie.rb
/usr/lib/ruby/vendor_ruby/dalli/compressor.rb
/usr/lib/ruby/vendor_ruby/dalli/version.rb
/usr/lib/ruby/vendor_ruby/action_dispatch/
/usr/lib/ruby/vendor_ruby/action_dispatch/middleware/
/usr/lib/ruby/vendor_ruby/action_dispatch/middleware/session/
/usr/lib/ruby/vendor_ruby/action_dispatch/middleware/session/dalli_store.rb
/usr/lib/ruby/vendor_ruby/dalli.rb
/usr/lib/ruby/vendor_ruby/rack/
/usr/lib/ruby/vendor_ruby/rack/session/
/usr/lib/ruby/vendor_ruby/rack/session/dalli.rb