Adding Fixed Advisory CGA-x4fg-cphc-qj67 for k8s_gateway (#25119)

Co-authored-by: octo-sts[bot] <[email protected]>

Author: octo-sts[bot]

k8s_gateway.advisories.yaml

@@ -109,3 +109,7 @@ advisories:
             componentType: go-module
             componentLocation: /usr/bin/coredns
             scanner: grype
+      - timestamp: 2025-11-04T07:28:17Z
+        type: fixed
+        data:
+          fixed-version: 1.6.0-r3