Merge pull request #897 from alphagov/dependabot/bundler/puma-6.4.2

build(deps): bump puma from 6.4.0 to 6.4.2

Author: jkempster34

Gemfile.lock

@@ -454,7 +454,7 @@ GEM
     psych (5.1.2)
       stringio
     public_suffix (5.0.4)
-    puma (6.4.0)
+    puma (6.4.2)
       nio4r (~> 2.0)
     racc (1.7.3)
     rack (2.2.8)