"Mac stable build_gallery" failed with ruby dep when previous build on branch succeeded #69341
Description
This test failed because it could not find bundler on 10/29 with the flutter/flutter_1_22_0 recipe, while the previous build with the same recipe which ran on 10/21 passed https://ci.chromium.org/p/flutter/builders/prod/Mac%20beta%20build_gallery/2.
+ bundle exec fastlane build_and_deploy_testflight
iOS Flutter Gallery built
Testing archiving with distribution profile...
/System/Library/Frameworks/Ruby.framework/Versions/2.6/usr/lib/ruby/2.6.0/rubygems.rb:283:in `find_spec_for_exe': Could not find 'bundler' (2.1.4) required by your /opt/s/w/ir/k/flutter/dev/ci/mac/Gemfile.lock. (Gem::GemNotFoundException)