Bump rubocop from 0.76.0 to 0.77.0 (#12585)

Bumps [rubocop](https://github.com/rubocop-hq/rubocop) from 0.76.0 to 0.77.0.
- [Release notes](https://github.com/rubocop-hq/rubocop/releases)
- [Changelog](https://github.com/rubocop-hq/rubocop/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rubocop-hq/rubocop/compare/v0.76.0...v0.77.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Gemfile

@@ -134,7 +134,7 @@ group :development do
   gem 'letter_opener', '~> 1.7'
   gem 'letter_opener_web', '~> 1.3'
   gem 'memory_profiler'
-  gem 'rubocop', '~> 0.76', require: false
+  gem 'rubocop', '~> 0.77', require: false
   gem 'rubocop-rails', '~> 2.4', require: false
   gem 'brakeman', '~> 4.7', require: false
   gem 'bundler-audit', '~> 0.6', require: false