Drop support of ruby-2.6 and ruby-2.7 (#318)

.github/workflows/ruby.yml

@@ -5,10 +5,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Ruby 2.7
+      - name: Set up Ruby 3.2
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 2.7
+          ruby-version: 3.2
       - name: Build and test with Rake
         env:
           BUGZILLA_API_KEY: ${{ secrets.BUGZILLA_API_KEY }}

.rubocop.yml

@@ -7,6 +7,7 @@ inherit_from: .rubocop_todo.yml
 
 AllCops:
   NewCops: enable
+  TargetRubyVersion: 3.0
 
 Metrics/BlockLength:
   Max: 27

CHANGELOG.md

@@ -13,7 +13,7 @@
 
 ### Changes
 
-* Drop support of `ruby-2.4` and `ruby-2.5` since it's EOLed
+* Drop support of `ruby-2.4`, `ruby-2.5`, `ruby-2.6`, `ruby-2.7` since it's EOLed
 * Require `mfa` for releasing gem
 * Remove `codeclimate` config, since we don't use it any more
 * Check `dependabot` at 8:00 Moscow time daily

onlyoffice_bugzilla_helper.gemspec

@@ -7,7 +7,7 @@ Gem::Specification.new do |s|
   s.name = OnlyofficeBugzillaHelper::NAME
   s.version = OnlyofficeBugzillaHelper::VERSION
   s.platform = Gem::Platform::RUBY
-  s.required_ruby_version = '>= 2.6'
+  s.required_ruby_version = '>= 3.0'
   s.authors = ['ONLYOFFICE', 'Pavel Lobashov']
   s.summary = 'Helper for bugzilla'
   s.description = 'Helper for bugzilla, used in QA'