Rubocop config tune up

[Gabe-Torres]

What github issue is this PR for, if any?

Resolves #6380

What changed, and why?

Update rubocop config file to specify "plugins" instead of "require" for the following extensions:

• rubocop-capybara
• rubocop-rspec
• rubocop-rspec_rails

This ensures all extensions are supported properly.

How is this tested? (please write rspec and jest tests!) 💖💪

Manual testing
run bundle exec standardrb

We now receive the following output -

Warning: Lint/UselessAccessModifier does not support ContextCreatingMethods parameter.

Supported parameters are:

  - Enabled

Before we received

Warning: Lint/UselessAccessModifier does not support ContextCreatingMethods parameter.

Supported parameters are:

- Enabled
rubocop-capybara extension supports plugin, specify `plugins: rubocop-capybara` instead of `require: rubocop-capybara` in /home/runner/work/casa/casa/.rubocop.yml.
For more information, see https://docs.rubocop.org/rubocop/plugin_migration_guide.html.
rubocop-rspec extension supports plugin, specify `plugins: rubocop-rspec` instead of `require: rubocop-rspec` in /home/runner/work/casa/casa/.rubocop.yml.
For more information, see https://docs.rubocop.org/rubocop/plugin_migration_guide.html.
rubocop-rspec_rails extension supports plugin, specify `plugins: rubocop-rspec_rails` instead of `require: rubocop-rspec_rails` in /home/runner/work/casa/casa/.rubocop.yml.
For more information, see https://docs.rubocop.org/rubocop/plugin_migration_guide.html.
WARNING: this project is being migrated to standard gradually via `/home/runner/work/casa/casa/.standard_todo.yml` and is ignoring these files:
app/controllers/all_casa_admins/sessions_controller.rb
app/controllers/api/v1/base_controller.rb

[compwron]

Good draft! Make sure that the lint part of CI passes.
(the docker part of CI is temporarily broken in general and not related to this PR)

[Gabe-Torres]

Good draft! Make sure that the lint part of CI passes. (the docker part of CI is temporarily broken in general and not related to this PR)

Gotcha! All checks passing now 👍🏽 Looks like main was recently updated so I can rebase/merge when approved. Thank you!