GHSA-VJ45-X3PJ-F4W4 Weblate: Improper access control for pending tasks in API

Impact The API for tasks didn't verify user access for pending tasks. This could expose logs of in-progress operations to users who don't have access to given scope. Patches https://github.com/WeblateOrg/weblate/pull/18515 Workarounds The attacker needs to guess the random UUID of the task, so...