refactor: update minimum Ruby version to 3.0

.rubocop.yml

@@ -12,7 +12,7 @@ AllCops:
     - gemfiles/*
     - spec/dummy??/**/*
     - vendor/**/*
-  TargetRubyVersion: 2.7
+  TargetRubyVersion: 3.0
 
 Lint/MissingSuper:
   Exclude:

README.md

@@ -19,6 +19,8 @@ Useful also with platforms like Heroku (due to their ephemeral file system).
 
 ## Installation
 
+_NOTE_: Ruby 2.7 is supported until version 1.3.0
+
 - Setup Active Storage in your Rails application
 - Add to your Gemfile `gem 'active_storage_db'` (and execute: `bundle`)
 - Install the gem migrations: `bin/rails active_storage_db:install:migrations` (and execute: `bin/rails db:migrate`)

active_storage_db.gemspec

@@ -16,7 +16,7 @@ Gem::Specification.new do |spec|
   spec.description = 'An ActiveStorage service plugin to store files in database.'
   spec.license     = 'MIT'
 
-  spec.required_ruby_version = '>= 2.7.0'
+  spec.required_ruby_version = '>= 3.0'
 
   spec.metadata['homepage_uri'] = spec.homepage
   spec.metadata['source_code_uri'] = spec.homepage

spec/rails_helper.rb

@@ -41,7 +41,7 @@
 require 'factory_bot_rails'
 
 support_files = File.expand_path('support/**/*.rb', __dir__)
-Dir[support_files].sort.each { |f| require f }
+Dir[support_files].each { |f| require f }
 
 # begin
 #   ActiveRecord::Migration.maintain_test_schema!