Test fails in Timezones that differ from UTC

When I run the tests localy (in CET timezone) the ProcessAsync_WhenClientUpdateClaimsOnRefreshIsFalse_ShouldStillUpdateJti fails because the time differs for one hour.

<img width="587" height="339" alt="Image" src="https://github.com/user-attachments/assets/f8e16cae-c484-4128-9735-eebe03cc1c30" />