Add missing authorization for `SecurityTrainingUrls`
As part of !82555 (merged) when we are moving the training url type from VulnerabilityType to ProjectType, we missed to put authorization. When it was under VulnerabilityType, the authorization was taken care by VulnerabilityType authorization. This will fix that.
Related to https://gitlab.com/gitlab-org/gitlab/-/issues/358054
Edited by Subashis Chakraborty