Update dep

Author: MUTOgen

specs_e2e/rails_6_1_7/Gemfile

@@ -10,6 +10,7 @@ gem 'puma', '~> 5.0'
 
 # Reduces boot times through caching; required in config/boot.rb
 gem 'bootsnap', '>= 1.4.4', require: false
+gem 'concurrent-ruby', '< 1.3.5'
 gem 'date', '~> 3.3.3'
 gem 'timeout', '~> 0.3.2'