Enora Germond

### Description Feat: Add notification when severity of a vulnerability changes ### Addressed Issue [#490](https://github.com/DependencyTrack/frontend/issues/490) ### Checklist - [x] I have read and understand the [contributing guidelines](https://github.com/DependencyTrack/dependency-track/blob/master/CONTRIBUTING.md#pull-requests) - [ ]...

Frontend part of https://github.com/DependencyTrack/dependency-track/issues/2361 ### Current Behavior If a vulnerability changes after it has been created (such as having its severity changed from Unassigned to Critical), it currently doesn't trigger...