feat!: Remove Ruby 2.6 and 2.7 as EOL (#1490)

* Remove Ruby 2.6 and 2.7 from workflow matrix as EOL

https://endoflife.date/ruby - EOL for over 3 years

* Minimum ruby version in gemspec

Author: CloCkWeRX

.github/workflows/ruby.yml

@@ -26,8 +26,6 @@ jobs:
       fail-fast: false
       matrix:
         ruby:
-          - 2.6
-          - 2.7
           - '3.0'
           - 3.1
           - 3.2
@@ -59,8 +57,6 @@ jobs:
             rails: 5.2.8.1
           - ruby: '3.0'
             rails: 5.1.7
-          - ruby: 2.6
-            rails: 7.0.4
           - database_url: postgresql://postgres:password@localhost:5432/test
             rails: 5.1.7
     env:

jsonapi-resources.gemspec

@@ -17,7 +17,7 @@ Gem::Specification.new do |spec|
   spec.executables   = spec.files.grep(%r{^bin/}) { |f| File.basename(f) }
   spec.test_files    = spec.files.grep(%r{^(test|spec|features)/})
   spec.require_paths = ['lib']
-  spec.required_ruby_version = '>= 2.3'
+  spec.required_ruby_version = '>= 3.0'
 
   spec.add_development_dependency 'bundler', '>= 1.17'
   spec.add_development_dependency 'rake'