Bump puma from 5.6.5 to 5.6.7

Bumps [puma](https://github.com/puma/puma) from 5.6.5 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@v5.6.5...v5.6.7)

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

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

Author: dependabot[bot]

Gemfile

@@ -7,7 +7,7 @@ end
 
 gem("bcrypt", "~> 3.1.7")
 gem("jwt", "~> 2.1.0")
-gem("puma", "~> 5.6.4")
+gem("puma", "~> 5.6.7")
 gem("rails", "~> 5.2.3")
 gem("rubocop")
 gem("sqlite3")

Gemfile.lock

@@ -77,13 +77,13 @@ GEM
     method_source (1.0.0)
     mini_mime (1.1.2)
     minitest (5.17.0)
-    nio4r (2.5.8)
+    nio4r (2.5.9)
     nokogiri (1.14.3-x86_64-linux)
       racc (~> 1.4)
     parallel (1.22.1)
     parser (3.1.2.1)
       ast (~> 2.4.1)
-    puma (5.6.5)
+    puma (5.6.7)
       nio4r (~> 2.0)
     racc (1.6.2)
     rack (2.2.6.4)
@@ -192,7 +192,7 @@ DEPENDENCIES
   database_cleaner
   jwt (~> 2.1.0)
   listen (~> 3.2.0)
-  puma (~> 5.6.4)
+  puma (~> 5.6.7)
   rails (~> 5.2.3)
   rspec
   rspec-mocks