enabled RSpec VerifiedDoubeReference rule

[GarryHurleyJr]

https://www.rubydoc.info/gems/rubocop-rspec/RuboCop/Cop/RSpec/VerifiedDoubleReference

What are you trying to accomplish?

The VerifiedDoubleReference rule was disabled for updater/spec/dependabot/updater/operations/refresh_group_update_pull_request_spec.rb. This PR fixes that exclusion

Anything you want to highlight for special attention from reviewers?

be alert for duplicated lines

How will you know you've accomplished your goal?

The file is changed and the test still works.

Checklist

• I have run the complete test suite to ensure all tests and linters pass.
• I have thoroughly tested my code changes to ensure they work as expected, including adding additional tests for new functionality.
• I have written clear and descriptive commit messages.
• I have provided a detailed description of the changes in the pull request, including the problem it addresses, how it fixes the problem, and any relevant details about the implementation.
• I have ensured that the code is well-documented and easy to understand.