Bump mysql2 from 0.5.5 to 0.5.6

Bumps [mysql2](https://github.com/brianmario/mysql2) from 0.5.5 to 0.5.6.
- [Release notes](https://github.com/brianmario/mysql2/releases)
- [Commits](brianmario/mysql2@0.5.5...0.5.6)

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

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile

@@ -6,7 +6,7 @@ ruby '~> 3.1.2'
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
 gem 'rails', '~> 7.1.3'
 # Use mysql as the database for Active Record
-gem 'mysql2', '~> 0.5.5'
+gem 'mysql2', '~> 0.5.6'
 # Use Puma as the app server
 gem 'puma', '~> 6.4.2'
 

Gemfile.lock

@@ -290,7 +290,7 @@ GEM
     mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
     mutex_m (0.2.0)
-    mysql2 (0.5.5)
+    mysql2 (0.5.6)
     net-imap (0.4.9.1)
       date
       net-protocol
@@ -606,7 +606,7 @@ DEPENDENCIES
   minitest-ci (~> 3.4.0)
   minitest-utils (~> 0.4.8)
   mocha (~> 2.1.0)
-  mysql2 (~> 0.5.5)
+  mysql2 (~> 0.5.6)
   nokogiri (~> 1.16.2)
   omniauth-google-oauth2 (~> 1.1.1)
   omniauth-oauth2 (~> 1.8.0)