fix(deps): update helm release fleet to v6.7.9

Author: renovate[bot]

k8s/bases/apps/fleetdm-undeployed/helm-release.yaml

@@ -11,7 +11,7 @@ spec:
   chart:
     spec:
       chart: fleet
-      version: v6.7.4
+      version: v6.7.9
       sourceRef:
         kind: HelmRepository
         name: fleetdm