Update permissions-required-for-github-apps.md (#21300)

Co-authored-by: Octomerger Bot <63058869+Octomerger@users.noreply.github.com>
Co-authored-by: Ethan Palm <56270045+ethanpalm@users.noreply.github.com>

Author: 3 people

content/rest/reference/permissions-required-for-github-apps.md

@@ -878,6 +878,7 @@ _Teams_
 - [`GET /repos/:owner/:repo/secret-scanning/alerts`](/rest/reference/secret-scanning#list-secret-scanning-alerts-for-a-repository) (:read)
 - [`GET /repos/:owner/:repo/secret-scanning/alerts/:alert_number`](/rest/reference/secret-scanning#get-a-secret-scanning-alert) (:read)
 - [`PATCH /repos/:owner/:repo/secret-scanning/alerts/:alert_number`](/rest/reference/secret-scanning#update-a-secret-scanning-alert) (:write)
+- [`GET /repos/:owner/:repo/secret-scanning/alerts/:alert_number/locations`](/rest/reference/secret-scanning#list-locations-for-a-secret-scanning-alert) (:read)
 {% endif %}
 
 ### Permission on "security events"