Upgrade @metamask/phishing-controller to version 15.0.0

A new major version of `@metamask/phishing-controller`, 15.0.0, is now available. This issue has been assigned to you and your team because you code-own this package in the `core` repo. If this package is present in this project, please prioritize upgrading it soon to unblock new features and bugfixes.

Start by locating the package manifests and lockfiles containing @metamask/phishing-controller, then check the repository's dependency update workflow. Done means the dependency is updated to 15.0.0 wherever it is present and the relevant dependency or project checks pass.

Written by the indexing model from the issue text.