Test against Ruby 3.3, Rails 7.2, and Rails 7.1

Also:
- Update checkout action
- Load correct sqlite3 version
- Set minimum required ruby version (according to Rails 6.0)

.github/workflows/ci.yml

@@ -10,25 +10,39 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: [3.2, 3.1, '3.0', 2.7, 2.6, ruby-head]
-        rails: ['7.0.0', '6.1.0', '6.0.0', main]
+        ruby: [3.3, 3.2, 3.1, '3.0', 2.7, 2.6, ruby-head]
+        rails: ['7.2.0', '7.1.0', '7.0.0', '6.1.0', '6.0.0', main]
         exclude:
+          - ruby: ruby-head
+            rails: '7.0.0'
           - ruby: ruby-head
             rails: '6.1.0'
           - ruby: ruby-head
             rails: '6.0.0'
+          - ruby: 3.3
+            rails: '6.1.0'
+          - ruby: 3.3
+            rails: '6.0.0'
           - ruby: 3.2
             rails: '6.0.0'
           - ruby: 3.1
             rails: '6.0.0'
           - ruby: 3.0
             rails: main
+          - ruby: 3.0
+            rails: '7.2.0'
           - ruby: 3.0
             rails: '6.0.0'
           - ruby: 2.7
             rails: main
+          - ruby: 2.7
+            rails: '7.2.0'
           - ruby: 2.6
             rails: main
+          - ruby: 2.6
+            rails: '7.2.0'
+          - ruby: 2.6
+            rails: '7.1.0'
           - ruby: 2.6
             rails: '7.0.0'
           - ruby: 2.6
@@ -40,7 +54,7 @@ jobs:
       RAILS_VERSION: ${{ matrix.rails }}
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Set up Ruby ${{ matrix.ruby }}
       uses: ruby/setup-ruby@v1
       with:

Gemfile

@@ -1,6 +1,8 @@
 source 'https://rubygems.org'
 
 rails_version = ENV['RAILS_VERSION'] || "default"
+require_sqlite3_1x = %w[7.0.0 6.1.0 6.0.0].include?(rails_version)
+
 rails =
   case rails_version
   when 'main'
@@ -12,5 +14,6 @@ rails =
   end
 
 gem 'rails', rails
+gem 'sqlite3', '~> 1.3' if require_sqlite3_1x
 
 gemspec

jsonapi-rails.gemspec

@@ -16,6 +16,8 @@ Gem::Specification.new do |spec|
   spec.files         = Dir['README.md', 'lib/**/*']
   spec.require_path  = 'lib'
 
+  spec.required_ruby_version = '>= 2.5.0'
+
   spec.add_dependency 'jsonapi-rb', '~> 0.5.0'
   spec.add_dependency 'jsonapi-parser', '~> 0.1.0'