Drop support ruby 2.7

Author: shuuuuuny

.github/workflows/main.yml

@@ -18,7 +18,7 @@ jobs:
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: "3.1"
+          ruby-version: "3.3"
       - name: Install bundler
         run: gem install bundler
       - name: Setup
@@ -44,9 +44,10 @@ jobs:
     strategy:
       matrix:
         ruby:
-          - "2.7"
           - "3.0"
           - "3.1"
+          - "3.2"
+          - "3.3"
     steps:
       - uses: actions/checkout@v2
       - name: Set up Ruby

.rubocop.yml

@@ -4,7 +4,7 @@ require:
   - rubocop-rubycw
 
 AllCops:
-  TargetRubyVersion: 2.7
+  TargetRubyVersion: 3.0
   NewCops: enable
   DisplayCopNames: true
   DisplayStyleGuide: true

activeadmin-menu_tree.gemspec

@@ -12,7 +12,7 @@ Gem::Specification.new do |spec|
   spec.description   = "This is a wrapper library for managing ActiveAdmin's menu structure in a simple yaml format, and automatically setting the priority and parent."
   spec.homepage      = "https://github.com/shuuuuun/activeadmin-menu_tree"
   spec.license       = "MIT"
-  spec.required_ruby_version = Gem::Requirement.new(">= 2.7.0")
+  spec.required_ruby_version = Gem::Requirement.new(">= 3.0")
 
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = "https://github.com/shuuuuun/activeadmin-menu_tree"