Sets a fixed datetime for the ci minutes specs

What does this MR do and why?

Fixes the broken master in #366704 (closed) by setting the current date to a fixed using the time_travel_to rspec tag

Screenshots or screen recordings

Current master	With a fixed timezone

How to set up and validate locally

Numbered steps to set up and validate the change are strongly suggested.

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Closes #366704 (closed)