Update dependency mocha to '~> 2.7.1'

Author: renovate[bot]

api/Gemfile

@@ -52,7 +52,7 @@ group :development, :test do
   gem 'faker', '~> 3.5.1'
 
   # Stubbing and mocking
-  gem 'mocha', '~> 2.4.5'
+  gem 'mocha', '~> 2.7.1'
 end
 
 group :development do

api/Gemfile.lock

@@ -169,7 +169,7 @@ GEM
     mini_mime (1.1.5)
     mini_portile2 (2.8.7)
     minitest (5.25.1)
-    mocha (2.4.5)
+    mocha (2.7.1)
       ruby2_keywords (>= 0.0.5)
     msgpack (1.7.2)
     multi_json (1.15.0)
@@ -318,7 +318,7 @@ DEPENDENCIES
   ed25519
   factory_bot_rails (~> 6.4.3)
   faker (~> 3.5.1)
-  mocha (~> 2.4.5)
+  mocha (~> 2.7.1)
   mysql2 (~> 0.5, >= 0.5.6)
   puma (~> 6.4, >= 6.4.3)
   rack-cors