Update ci and required ruby version

HParker · HParker · commit 9150a8012068 · 2020-12-14T14:29:04.000-08:00
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
@@ -7,7 +7,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby_version: ["2.5", "2.6", "2.7"]
+        ruby_version: ["2.6", "2.7", "3.0"]
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
diff --git a/rubocop-github.gemspec b/rubocop-github.gemspec
@@ -18,7 +18,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency "minitest", "~> 5.14"
   s.add_development_dependency "rake", "~> 12.0"
 
-  s.required_ruby_version = ">= 2.1.0"
+  s.required_ruby_version = ">= 2.5.0"
 
   s.email = "engineering@github.com"
   s.authors = "GitHub"
