Bump puma from 4.3.12 to 5.6.7

Bumps [puma](https://github.com/puma/puma) from 4.3.12 to 5.6.7.
- [Release notes](https://github.com/puma/puma/releases)
- [Changelog](https://github.com/puma/puma/blob/master/History.md)
- [Commits](puma/puma@v4.3.12...v5.6.7)

---
updated-dependencies:
- dependency-name: puma
  dependency-type: direct:production
...

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

Gemfile

@@ -8,7 +8,7 @@ gem 'enumerations', '~> 2.3'
 gem 'httparty', '~> 0.21'
 gem 'pry-byebug', '~> 3.9'
 gem 'pry-rails', '~> 0.3'
-gem 'puma', '~> 4.3'
+gem 'puma', '~> 5.6'
 gem 'rack-cors', '~> 1.1'
 gem 'redis', '< 4.6'
 gem 'resque', '~> 2.0'

Gemfile.lock

@@ -95,7 +95,7 @@ GEM
     multi_xml (0.6.0)
     mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
-    nio4r (2.5.8)
+    nio4r (2.5.9)
     nokogiri (1.14.3)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
@@ -108,7 +108,7 @@ GEM
       pry (~> 0.13.0)
     pry-rails (0.3.9)
       pry (>= 0.10.4)
-    puma (4.3.12)
+    puma (5.6.7)
       nio4r (~> 2.0)
     raabro (1.4.0)
     racc (1.6.2)
@@ -197,7 +197,7 @@ DEPENDENCIES
   pg (~> 1.2)
   pry-byebug (~> 3.9)
   pry-rails (~> 0.3)
-  puma (~> 4.3)
+  puma (~> 5.6)
   rack-cors (~> 1.1)
   rails (~> 5.0)
   redis (< 4.6)