Increase retry window of SyncSeatLinkRequestWorker

This is related with https://gitlab.com/gitlab-org/customers-gitlab-com/-/issues/6261.

What does this MR do and why?

This MR increases the retry time window of SyncSeatLinkRequestWorker in order to mitigate incidents like the one described on https://gitlab.com/gitlab-org/customers-gitlab-com/-/issues/6261. A long-term solution is currently being discussed in the mentioned issue.

Screenshots or screen recordings

N/A

How to set up and validate locally

N/A

MR acceptance checklist

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