Merge pull request #5 from trln/TD-1324-ruby-3

Add support for Ruby 3.x, revise testing matrix. Closes TD-1324.

.github/workflows/ruby.yml

@@ -10,7 +10,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ['2.6.9', '2.7.5']
+        ruby: ['2.7.5', '3.0', '3.1', '3.2']
     name: Ruby ${{ matrix.ruby }}
 
     steps:

.rubocop.yml

@@ -1,7 +1,7 @@
 require: rubocop-rspec
 
 AllCops:
-  TargetRubyVersion: "2.4"
+  TargetRubyVersion: "2.7.5"
   Exclude:
     - '**/bin/spring'
     - '**/bin/setup'

argon_call_number_search.gemspec

@@ -7,7 +7,7 @@ require 'argon_call_number_search/version'
 Gem::Specification.new do |spec|
   spec.name          = 'argon_call_number_search'
   spec.version       = ArgonCallNumberSearch::VERSION
-  spec.required_ruby_version = '~> 2.4'
+  spec.required_ruby_version = '>= 2.7.5'
   spec.authors       = ['Cory Lown']
   spec.email         = ['[email protected]']