chore(deps): update helm release ingress-nginx to v4.12.3

Author: renovate[bot]

flux/apps/ingress-nginx/helm-release.yml

@@ -8,7 +8,7 @@ spec:
   chart:
     spec:
       chart: ingress-nginx
-      version: "4.12.1"
+      version: "4.12.3"
       sourceRef:
         kind: HelmRepository
         name: ingress-nginx