Drop support for Ruby 2.5

Author: bquorning

.github/workflows/ci.yml

@@ -17,10 +17,6 @@ jobs:
           - rails6.1
           - rails7.0
         include:
-          - {ruby-version: '2.5', gemfile: rails4.2}
-          - {ruby-version: '2.5', gemfile: rails5.0}
-          - {ruby-version: '2.5', gemfile: rails5.1}
-          - {ruby-version: '2.5', gemfile: rails5.2}
           - {ruby-version: '2.6', gemfile: rails4.2}
           - {ruby-version: '2.6', gemfile: rails5.0}
           - {ruby-version: '2.6', gemfile: rails5.1}
@@ -29,8 +25,8 @@ jobs:
     env:
       BUNDLE_GEMFILE: gemfiles/${{ matrix.gemfile }}.gemfile
     steps:
-      - uses: zendesk/checkout@v3
-      - uses: zendesk/setup-ruby@v1
+      - uses: actions/checkout@v4
+      - uses: ruby/setup-ruby@v1
         with:
           ruby-version: ${{ matrix.ruby-version }}
           bundler-cache: true

migration_tools.gemspec

@@ -7,7 +7,7 @@ Gem::Specification.new "migration_tools", "1.8.0" do |s|
   s.files = `git ls-files lib`.split("\n")
   s.license = "Apache-2.0"
 
-  s.required_ruby_version = '>= 2.5.0'
+  s.required_ruby_version = '>= 2.6.0'
 
   s.add_runtime_dependency "activerecord", '>= 4.2.0', '< 7.1'