Set the urgency of send_phone_verification_code endpoint to low
Related to https://gitlab.com/gitlab-org/modelops/anti-abuse/team-tasks/-/issues/503
What does this MR do and why?
Context
send_phone_verification_code endpoints are top 2 and 3 endpoints consuming our error budget (apdex):
On average, around 50% (3366/6561 at the time of writing) of requests on these endpoints exceed the current target duration (1s) with most of duration_s spent waiting for the request to Telesign SMS Verify API endpoint with an average duration of 0.7s. Since we don't have any control on this endpoint we are very limited on what we can improve to ensure the current target duration (1s) is met.
Change
This MR updates the urgency of the send_phone_verification_code endpoints to low (doc) which sets the target duration of requests for the affected endpoints from 1s to 5s.
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