Bump mysql2 from 0.5.3 to 0.5.5

Bumps [mysql2](https://github.com/brianmario/mysql2) from 0.5.3 to 0.5.5.
- [Release notes](https://github.com/brianmario/mysql2/releases)
- [Commits](https://github.com/brianmario/mysql2/compare/0.5.3...0.5.5)

---
updated-dependencies:
- dependency-name: mysql2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile

@@ -8,7 +8,7 @@ gem 'puma', '~> 6.0'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3', '~> 1.5.3'
 
-gem 'mysql2', '~> 0.5.2', group: :production
+gem 'mysql2', '~> 0.5.5', group: :production
 
 gem 'bootsnap', require: false
 

Gemfile.lock

@@ -161,7 +161,7 @@ GEM
     multi_json (1.15.0)
     multi_xml (0.6.0)
     multipart-post (2.1.1)
-    mysql2 (0.5.3)
+    mysql2 (0.5.5)
     net-http (0.2.0)
       net-protocol
       uri
@@ -325,7 +325,7 @@ DEPENDENCIES
   jbuilder (~> 2.11.3)
   jquery-rails (~> 4.4.0)
   listen (~> 3.7.0)
-  mysql2 (~> 0.5.2)
+  mysql2 (~> 0.5.5)
   net-http
   omniauth
   omniauth-github