Snipe-IT has Privilege Escalation via API Permissions Assignment

Description

### Impact An authenticated user with only `users.edit` permission can escalate their own privileges to `admin` by sending a PATCH request to `/api/v1/users/{id}` with `permissions[admin]=1`. The API controller only strips the `superuser` key from the permissions array, allowing `admin` and all other permission keys to be set by any user who can update users. ### Patches Patched in https://github.com/grokability/snipe-it/commit/ce18ff669ceb0f0349749fd5d11c1d3d40b10569, fix was released in v8.4.1 ### Workarounds None.

Affected Packages (1)