Bump mysql2 from 0.3.21 to 0.4.10

Bumps [mysql2](https://github.com/brianmario/mysql2) from 0.3.21 to 0.4.10.
- [Changelog](https://github.com/brianmario/mysql2/blob/master/CHANGELOG.md)
- [Commits](brianmario/mysql2@0.3.21...0.4.10)

Author: dependabot-support

Gemfile

@@ -11,7 +11,7 @@ gem 'rake', '< 12.0'
 # gem "mongoid", "~> 3.0.0"
 # gem 'bson_ext'
 
-gem 'mysql2', '~> 0.3.10' # limit to this version for Rails 3.2
+gem 'mysql2', '~> 0.4.10' # limit to this version for Rails 3.2
 
 # For some reason this is needed in production for consoles
 gem 'test-unit'

Gemfile.lock

@@ -459,7 +459,7 @@ GEM
     multi_xml (0.6.0)
     multipart-post (2.0.0)
     mustache (1.0.5)
-    mysql2 (0.3.21)
+    mysql2 (0.4.10)
     nenv (0.3.0)
     net-http-persistent (2.9.4)
     netrc (0.11.0)
@@ -770,7 +770,7 @@ DEPENDENCIES
   memoist
   mocha
   mustache (= 1.0.5)
-  mysql2 (~> 0.3.10)
+  mysql2 (~> 0.4.10)
   parallel_tests
   pry-byebug
   pry-remote