Update dependency to latest Rubocop 1.50

[JulienItard]

edit : Hello ! I would like to use Rubocop higher than 1.41. I cant because of this :)

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Before submitting the PR make sure the following are checked:

• [x] Feature branch is up-to-date with main (if not - rebase it).
• [x] Squashed related commits together.
• [ ] Added tests.
• [ ] Updated documentation.
• [x] Added an entry to the CHANGELOG.md if the new code introduces user-observable changes.
• [x] The build (bundle exec rake) passes (be sure to run this locally, since it may produce updated documentation that you will need to commit).

[bquorning]

Why do we need to require a newer version of RuboCop?

[JulienItard]

Why do we need to require a newer version of RuboCop?

because I would like to use Rubocop greater than 1.41 :) In theory i should be able to update latest v < 2 but it doesn't work

[pirj]

There's nothing that prevents you from doing so, @JulienItard

[pirj]

We bump the minimum rubocop dependency when we need something new from rubocop. There is nothing that prevents users from using the latest 1.xx rubocop with any of rubocop-capybara versions.