Fix flaky recalculate_dora_deployment_frequency_score_spec.rb
What does this MR do and why?
Fix flaky recalculate_dora_deployment_frequency_score_spec.rb. Failed here: https://gitlab.com/gitlab-org/gitlab/-/jobs/7445310463
It failed 28 July 2024 because
- 240 days ago is 1 Dec
- 180 days ago the beginning of the months is 1 Jan
- One of the tests does 1 Jan - 1 day and falls into December