build(deps): bump puma from 5.3.1 to 5.5.0 (#828)

Bumps [puma](https://github.com/puma/puma) from 5.3.1 to 5.5.0.
- [Release notes](https://github.com/puma/puma/releases)
- [Changelog](https://github.com/puma/puma/blob/master/History.md)
- [Commits](puma/puma@v5.3.1...v5.5.0)

---
updated-dependencies:
- dependency-name: puma
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Gemfile

@@ -9,7 +9,7 @@ gem 'rails', '~> 5.2.4.4'
 # Use mysql as the database for Active Record
 gem 'mysql2', '>= 0.4.4', '< 0.6.0'
 # Use Puma as the app server
-gem 'puma', '~> 5.3'
+gem 'puma', '~> 5.5'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 6.0'
 # Use Uglifier as compressor for JavaScript assets

Gemfile.lock

@@ -252,7 +252,7 @@ GEM
     mustache (1.1.1)
     mysql2 (0.5.3)
     nenv (0.3.0)
-    nio4r (2.5.7)
+    nio4r (2.5.8)
     nokogiri (1.12.4)
       mini_portile2 (~> 2.6.1)
       racc (~> 1.4)
@@ -287,7 +287,7 @@ GEM
       coderay (~> 1.1)
       method_source (~> 1.0)
     public_suffix (4.0.6)
-    puma (5.3.1)
+    puma (5.5.0)
       nio4r (~> 2.0)
     raabro (1.4.0)
     racc (1.5.2)
@@ -489,7 +489,7 @@ DEPENDENCIES
   mysql2 (>= 0.4.4, < 0.6.0)
   omniauth-mlh (~> 0.4.2)
   omniauth-rails_csrf_protection
-  puma (~> 5.3)
+  puma (~> 5.5)
   rack-cors
   rails (~> 5.2.4.4)
   rails-controller-testing