Use mocha >= 2.0.1 (#39070).

Allows compatibility with the latest Mocha version for Ruby < 2.7. Mocha 2.0.0 had a LoadError with Ruby 2.7, fixed in Mocha 2.0.1.


git-svn-id: https://svn.redmine.org/redmine/trunk@22308 e93f8b46-1217-0410-a6f0-8f06a7374b81

Gemfile

@@ -94,7 +94,7 @@ end
 
 group :test do
   gem "rails-dom-testing"
-  gem 'mocha', '>= 1.4.0'
+  gem 'mocha', '>= 2.0.1'
   gem 'simplecov', '~> 0.22.0', :require => false
   gem "ffi", platforms: [:mingw, :x64_mingw, :mswin]
   # For running system tests