Bump puma from 4.3.8 to 4.3.9 (#50)

Bumps [puma](https://github.com/puma/puma) from 4.3.8 to 4.3.9.
- [Release notes](https://github.com/puma/puma/releases)
- [Changelog](https://github.com/puma/puma/blob/master/History.md)
- [Commits](puma/puma@v4.3.8...v4.3.9)

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

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

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

Author: dependabot[bot]

Gemfile

@@ -10,7 +10,7 @@ gem 'rails', '~> 6.0.4.1'
 # Use sqlite3 as the database for Active Record
 gem 'sqlite3', '~> 1.4.2'
 # Use Puma as the app server
-gem 'puma', '~> 4.3.8'
+gem 'puma', '~> 4.3.9'
 # Use SCSS for stylesheets
 gem 'sass-rails', '~> 6.0.0'
 # Use Uglifier as compressor for JavaScript assets

Gemfile.lock

@@ -191,7 +191,7 @@ GEM
     pry-rails (0.3.9)
       pry (>= 0.10.4)
     public_suffix (4.0.6)
-    puma (4.3.8)
+    puma (4.3.9)
       nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
@@ -302,7 +302,7 @@ DEPENDENCIES
   omniauth-rails_csrf_protection
   pry-nav (~> 0.3.0)
   pry-rails (~> 0.3.9)
-  puma (~> 4.3.8)
+  puma (~> 4.3.9)
   rails (~> 6.0.4.1)
   sass-rails (~> 6.0.0)
   selenium-webdriver (~> 3.142.7)