Update Deviation Request process for initiating Vulnerability Management review

Why is this change being made?

The POAM Deviation Request process suggests that the automatic addition of the ~FedRAMP DR Status::Ready for Review will initiate a review from the Vulnerability management team within 2 days. Similar guidance was given on previous requests.

However the issue template had directions for applying the ~FedRAMP DR Status:: Technical review label, and follow up conversation confirmed the process.

This MR adds the correct reference to the ~FedRAMP DR Status::Technical review for initiating the review on the Deviation Request.

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