Bump puma from 5.5.2 to 5.6.1

Bumps [puma](https://github.com/puma/puma) from 5.5.2 to 5.6.1.
- [Release notes](https://github.com/puma/puma/releases)
- [Changelog](https://github.com/puma/puma/blob/master/History.md)
- [Commits](https://github.com/puma/puma/compare/v5.5.2...v5.6.1)

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

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

Gemfile

@@ -21,7 +21,7 @@ gem 'acts_as_list'
 gem 'bcrypt', '~> 3.1.16'
 gem 'htmlentities'
 gem "kt-paperclip", "~> 7.0"
-gem 'puma', '~> 5.5'
+gem 'puma', '~> 5.6'
 gem 'rails_autolink'
 gem 'RedCloth'
 gem 'sanitize', '~> 6.0'

Gemfile.lock

@@ -169,7 +169,7 @@ GEM
     parser (3.1.0.0)
       ast (~> 2.4.1)
     pg (1.2.3)
-    puma (5.5.2)
+    puma (5.6.1)
       nio4r (~> 2.0)
     racc (1.6.0)
     rack (2.2.3)
@@ -340,7 +340,7 @@ DEPENDENCIES
   mocha
   mysql2 (~> 0.5.3)
   pg (~> 1.2.3)
-  puma (~> 5.5)
+  puma (~> 5.6)
   rack-mini-profiler
   rails (~> 6.0.4)
   rails-controller-testing