Drop support of Ruby 3.1

Author: n-rodriguez

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
       - name: Setup Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: '3.1'
+          ruby-version: '3.2'
 
       - name: Bundler
         run: bundle install
@@ -42,15 +42,11 @@ jobs:
           - '3.4'
           - '3.3'
           - '3.2'
-          - '3.1'
           - 'head'
         rails:
           - rails_8.0
           - rails_7.2
           - rails_7.1
-        exclude:
-          - ruby: '3.1'
-            rails: 'rails_8.0'
 
     env: # $BUNDLE_GEMFILE must be set at the job level, so it is set for all steps
       BUNDLE_GEMFILE: ${{ github.workspace }}/gemfiles/${{ matrix.rails }}.gemfile

.rubocop.yml

@@ -7,7 +7,7 @@ plugins:
 
 AllCops:
   NewCops: enable
-  TargetRubyVersion: 3.1
+  TargetRubyVersion: 3.2
   Exclude:
     - bin/*
     - gemfiles/*

crono.gemspec

@@ -13,7 +13,7 @@ Gem::Specification.new do |s|
   s.description = 'A time-based background job scheduler daemon (just like Cron) for Rails'
   s.license     = 'Apache-2.0'
 
-  s.required_ruby_version = '>= 3.1.0'
+  s.required_ruby_version = '>= 3.2.0'
 
   s.files = Dir[
     'README.md',