Drop Rails < 7.0 support

Author: tagliala

.github/workflows/ci.yaml

@@ -19,7 +19,6 @@ jobs:
           - "3.2"
           - "3.3"
         rails:
-          - rails_61
           - rails_70
           - rails_71
           - rails_72

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+* Remove support for Ruby `< 3.1`.
+* Remove support for Rails `< 7.0`.
+* Test against Rails 8.0.
+
 ## Version 2.0.1
 
 * Prefer `require_relative` for internal requires [#939][].
@@ -241,3 +245,4 @@ _No changes_.
 [#921]: https://github.com/activeadmin/inherited_resources/pull/921
 [#933]: https://github.com/activeadmin/inherited_resources/pull/933
 [#939]: https://github.com/activeadmin/inherited_resources/pull/939
+[#942]: https://github.com/activeadmin/inherited_resources/pull/942

gemfiles/rails_61/Gemfile

@@ -25,7 +25,7 @@ Gem::Specification.new do |s|
   s.required_ruby_version = '>= 3.1'
 
   s.add_dependency("responders", ">= 2")
-  s.add_dependency("actionpack", ">= 6.0")
-  s.add_dependency("railties", ">= 6.0")
+  s.add_dependency("actionpack", ">= 7.0")
+  s.add_dependency("railties", ">= 7.0")
   s.add_dependency("has_scope",  ">= 0.6")
 end