remove passenger

Gemfile

@@ -16,14 +16,13 @@ gem "net-ssh"
 gem "haml-rails"
 gem 'high_voltage', '~> 3.1'
 
-gem "passenger", ">= 5.3.2", require: "phusion_passenger/rack_handler"
-
 # Use Active Storage variants [https://guides.rubyonrails.org/active_storage_overview.html#transforming-images]
 # gem "image_processing", "~> 1.2"
 
 group :development, :test do
   # See https://guides.rubyonrails.org/debugging_rails_applications.html#debugging-with-the-debug-gem
   gem "debug", platforms: %i[ mri mingw x64_mingw ]
+  gem "puma"
 end
 
 group :development do