Remove support for Ruby 3.1

- rubycritic.gemspec: update minimum Ruby version to 3.2
- .rubocop.yml: update target Ruby version to 3.2
- CI: drop Ruby 3.1, and change jruby from 9.4 (Ruby 3.1) to HEAD (Ruby 3.4, still in testing)

# Conflicts:
#	CHANGELOG.md

Author: faisal

.github/workflows/main.yml

@@ -29,16 +29,16 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version:
-          - '3.1'
           - '3.2'
           - '3.3'
           - '3.4'
         experimental: [false]
         include:
           - ruby-version: 'ruby-head'
             experimental: true
-          - ruby-version: 'jruby-9.4'
+          - ruby-version: 'jruby-head'
             experimental: true
+            continue-on-error: true
     steps:
       - uses: actions/checkout@v2
       - name: Set up Ruby ${{ matrix.ruby-version }}
@@ -59,16 +59,16 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version:
-          - '3.1'
           - '3.2'
           - '3.3'
           - '3.4'
         experimental: [false]
         include:
           - ruby-version: 'ruby-head'
             experimental: true
-          - ruby-version: 'jruby-9.4'
+          - ruby-version: 'jruby-head'
             experimental: true
+            continue-on-error: true
     steps:
       - uses: actions/checkout@v2
       - name: Set up Ruby ${{ matrix.ruby-version }}
@@ -89,16 +89,16 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version:
-          - '3.1'
           - '3.2'
           - '3.3'
           - '3.4'
         experimental: [false]
         include:
           - ruby-version: 'ruby-head'
             experimental: true
-          - ruby-version: 'jruby-9.4'
+          - ruby-version: 'jruby-head'
             experimental: true
+            continue-on-error: true
     steps:
       - uses: actions/checkout@v2
       - name: Set up Ruby ${{ matrix.ruby-version }}
@@ -119,16 +119,16 @@ jobs:
       fail-fast: false
       matrix:
         ruby-version:
-          - '3.1'
           - '3.2'
           - '3.3'
           - '3.4'
         experimental: [false]
         include:
           - ruby-version: 'ruby-head'
             experimental: true
-          - ruby-version: 'jruby-9.4'
+          - ruby-version: 'jruby-head'
             experimental: true
+            continue-on-error: true
 
     steps:
       - uses: actions/checkout@v2

.rubocop.yml

@@ -11,7 +11,7 @@ AllCops:
     - 'tmp/**/*'
     - 'vendor/**/*'
     - 'gemfiles/*'
-  TargetRubyVersion: 3.1
+  TargetRubyVersion: 3.2
 
 Metrics/BlockLength:
   Enabled: false

CHANGELOG.md

@@ -1,5 +1,7 @@
 # main [(unreleased)](https://github.com/whitesmith/rubycritic/compare/v4.9.2...main)
 
+* [CHANGE] Drop support for Ruby 3.1.x (by [@faisal][])
+
 # v4.9.2 / 2025-04-08 [(commits)](https://github.com/whitesmith/rubycritic/compare/v4.9.1...v4.9.2)
 
 * [CHANGE] Adds development dependency for gems removed from standard library in Ruby 3.5 -- ostruct, irb, rdoc (by [@faisal][])

rubycritic.gemspec

@@ -14,7 +14,7 @@ Gem::Specification.new do |spec|
   spec.summary       = 'RubyCritic is a Ruby code quality reporter'
   spec.homepage      = 'https://github.com/whitesmith/rubycritic'
   spec.license       = 'MIT'
-  spec.required_ruby_version = '>= 3.1.0'
+  spec.required_ruby_version = '>= 3.2.0'
 
   spec.files = [
     'CHANGELOG.md',