Bump puma from 5.1.1 to 5.2.1 (#15670)

Bumps [puma](https://github.com/puma/puma) from 5.1.1 to 5.2.1.
- [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/v5.1.1...v5.2.1)

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

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

Gemfile

@@ -5,7 +5,7 @@ ruby '>= 2.5.0', '< 3.0.0'
 
 gem 'pkg-config', '~> 1.4'
 
-gem 'puma', '~> 5.1'
+gem 'puma', '~> 5.2'
 gem 'rails', '~> 5.2.4.4'
 gem 'sprockets', '~> 3.7.2'
 gem 'thor', '~> 1.1'

Gemfile.lock

@@ -361,7 +361,7 @@ GEM
     net-scp (3.0.0)
       net-ssh (>= 2.6.5, < 7.0.0)
     net-ssh (6.1.0)
-    nio4r (2.5.4)
+    nio4r (2.5.5)
     nokogiri (1.11.1)
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
@@ -432,7 +432,7 @@ GEM
     pry-rails (0.3.9)
       pry (>= 0.10.4)
     public_suffix (4.0.6)
-    puma (5.1.1)
+    puma (5.2.1)
       nio4r (~> 2.0)
     pundit (2.1.0)
       activesupport (>= 3.0.0)
@@ -773,7 +773,7 @@ DEPENDENCIES
   private_address_check (~> 0.5)
   pry-byebug (~> 3.9)
   pry-rails (~> 0.3)
-  puma (~> 5.1)
+  puma (~> 5.2)
   pundit (~> 2.1)
   rack (~> 2.2.3)
   rack-attack (~> 6.5)