Require Ruby >= 3.3 and update CI Ruby versions (#173)

Author: dduugg

.github/workflows/cd.yml

@@ -26,7 +26,7 @@
               #  https://github.com/oxidize-rb/actions/blob/main/fetch-ci-data/evaluate.rb#L54
               exclude: [arm-linux, x64-mingw32]
             stable-ruby-versions: |
-              only: ['3.2', '3.3', '3.4', '4.0']
+              only: ['3.3', '3.4', '4.0']
   
     build:
       name: Build native gems

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
           stable-ruby-versions: |
             # Explicitly include all Ruby versions we want to support
             # to ensure binaries are built for each version
-            only: ['3.2', '3.3', '3.4', '4.0']
+            only: ['3.3', '3.4', '4.0']
   rspec:
     runs-on: ${{ matrix.os }}
     needs: ci-data

.rubocop.yml

@@ -14,7 +14,7 @@ AllCops:
     - vendor/bundle/**/**
     - tmp/**/**
     - target/**/**
-  TargetRubyVersion: 3.2
+  TargetRubyVersion: 3.3
 
 Metrics/ParameterLists:
   Enabled: false

code_ownership.gemspec

@@ -21,7 +21,7 @@ Gem::Specification.new do |spec|
           'public gem pushes.'
   end
 
-  spec.required_ruby_version = Gem::Requirement.new('>= 3.2', '< 4.1.dev')
+  spec.required_ruby_version = Gem::Requirement.new('>= 3.3', '< 4.1.dev')
 
   # https://guides.rubygems.org/make-your-own-gem/#adding-an-executable
   # and