Add puma to test group

Author: lcreid

gemfiles/common.gemfile

@@ -4,10 +4,6 @@ gemspec path: File.dirname(__dir__)
 
 # To test with different Rails versions, use the files in `./gemfiles`
 
-group :development do
-  gem "puma"
-end
-
 group :test do
   gem "capybara-screenshot-diff", require: false
   gem "chunky_png", "~> 1.4"
@@ -21,6 +17,7 @@ group :development, :test do
   gem "debug"
   gem "htmlbeautifier"
   gem "ostruct" if Gem::Version.new(RUBY_VERSION) >= Gem::Version.new("3.5.0")
+  gem "puma"
   gem "rubocop-performance", require: false
   gem "rubocop-rails", require: false
   gem "warning"