Upgraded to Ruby 3.1.2

Get Puma from GitHub because otherwise it won't install on OpenBSD

Gemfile

@@ -4,7 +4,7 @@ git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 gem 'devise'
 gem 'cancancan'
 
-ruby "3.0.4"
+ruby "3.1.2"
 
 # Bundle edge Rails instead: gem "rails", github: "rails/rails", branch: "main"
 gem "rails", "~> 7.0.2.3"
@@ -16,7 +16,7 @@ gem "sprockets-rails"
 gem "mysql2", "~> 0.5"
 
 # Use the Puma web server [https://github.com/puma/puma]
-gem "puma", "~> 5.0"
+gem "puma", git: 'https://github.com/puma/puma', branch: 'master'
 
 # Use JavaScript with ESM import maps [https://github.com/rails/importmap-rails]
 gem "importmap-rails"