[Feature request] New rule: Prevent merge of PR if vulnerability with a certain severity is found

[norcino]

Hi, I was hoping to be able to use dependabot to prevent PRs from being completed when one or more vulnerability has been found, with a severity greater than the specified.
Apparently it is possible to do this with the Security Code Scan, please I would like to know if maybe I missed something or if this has been planner.