Upgrade Rubocop to latest version

[aduth]

🛠 Summary of changes

Upgrades Rubocop to the latest version.

I noticed in #8909 that my local precommit Rubocop check was flagging some preexisting issues in spec/presenters/webauthn_setup_presenter_spec.rb. It turns out that newer versions of Rubocop have some improvements for catching unintended issues:

• Extra spacing
• Duplicate keys in hashes
• Doubled arguments parentheses

The newer version would have also started enforcing anonymous arguments forwarding, but I chose to disable this as a stylistic preference.

For example, this:

identity-idp/spec/support/features/session_helper.rb

Lines 28 to 29 in f3d1a46

	def select_2fa_option(option, **find_options)
	find("label[for='two_factor_options_form_selection_#{option}']", **find_options).click

...would have been enforced as:

    def select_2fa_option(option, **)
      find("label[for='two_factor_options_form_selection_#{option}']", **).click

📜 Testing Plan

1. bundle
2. rubocop