Have cut_release handle "config/default" and generate cops doc

Follow up to rubocop/rubocop@1905f1b.

.circleci/config.yml

@@ -30,9 +30,6 @@ jobs:
       - run:
           name: Check documentation syntax
           command: bundle exec rake documentation_syntax_check
-      - run:
-          name: Build documentation and verify that doc files are in sync
-          command: bundle exec rake verify_cops_documentation
 
 workflows:
   build:

Rakefile

@@ -38,7 +38,6 @@ RuboCop::RakeTask.new(:internal_investigation)
 
 task default: %i[
   documentation_syntax_check
-  generate_cops_documentation
   spec
   internal_investigation
 ]

tasks/cops_documentation.rake

@@ -10,24 +10,14 @@ YARD::Rake::YardocTask.new(:yard_for_generate_documentation) do |task|
   task.options = ['--no-output']
 end
 
-desc 'Generate docs of all cops departments'
-task generate_cops_documentation: :yard_for_generate_documentation do
+task update_cops_documentation: :yard_for_generate_documentation do
   deps = ['Rails']
   CopsDocumentationGenerator.new(departments: deps).call
 end
 
-desc 'Verify that documentation is up to date'
-task verify_cops_documentation: :generate_cops_documentation do
-  # Do not print diff and yield whether exit code was zero
-  sh('git diff --quiet docs') do |outcome, _|
-    exit if outcome
-
-    # Output diff before raising error
-    sh('GIT_PAGER=cat git diff docs')
-
-    warn 'The docs directory is out of sync. Run `rake generate_cops_documentation` and commit the results.'
-    exit!
-  end
+desc 'Generate docs of all cops departments (obsolete)'
+task :generate_cops_documentation do
+  puts 'Updating the documentation is now done automatically!'
 end
 
 desc 'Syntax check for the documentation comments'

tasks/cut_release.rake

@@ -49,12 +49,25 @@ namespace :cut_release do
     version.split('.').take(2).join('.')
   end
 
+  # Replace `<<next>>` (and variations) with version being cut.
+  def update_cop_versions(_old_version, new_version)
+    update_file('config/default.yml') do |default|
+      default.gsub(/['"]?<<\s*next\s*>>['"]?/i,
+                   "'#{version_sans_patch(new_version)}'")
+    end
+  end
+
   def new_version_changes
     changelog = File.read('CHANGELOG.md')
     _, _, new_changes, _older_changes = changelog.split(/^## .*$/, 4)
     new_changes
   end
 
+  def update_file(path)
+    content = File.read(path)
+    File.write(path, yield(content))
+  end
+
   def user_links(text)
     names = text.scan(/\[@(\S+)\]\[\]/).map(&:first).uniq
     names.map { |name| "[@#{name}]: https://github.com/#{name}" }
@@ -66,6 +79,9 @@ namespace :cut_release do
     Bump::Bump.run(release_type, commit: false, bundle: false, tag: false)
     new_version = Bump::Bump.current
 
+    update_cop_versions(old_version, new_version)
+    Rake::Task['update_cops_documentation'].invoke
+
     add_header_to_changelog(new_version)
     create_release_notes(new_version)
     update_antora_yml(new_version)