chore(mdns-relay): restart once to check the v1.9.1 net1 attach

No pod has attached net1 since cni-plugins-installer moved to
containernetworking/plugins v1.9.1 (#1142). Hestia's verify item: restart
mdns-relay and confirm a 10.2.30.x DHCP lease. Atlas has no cluster write,
so the restart goes through a pod-template annotation.

Refs: REN-722
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

kubernetes/apps/home-assistant/mdns-relay-deployment.yaml

@@ -42,6 +42,9 @@ spec:
       labels:
         app.kubernetes.io/name: mdns-relay
       annotations:
+        # Bump to restart the pod and re-attach net1 (DHCP via multus).
+        # 2026-10-06: first attach on containernetworking/plugins v1.9.1.
+        homelab.renner.uno/restarted-for: "2026-10-06 cni-plugins v1.9.1 attach check"
         k8s.v1.cni.cncf.io/networks: mdns-relay-iot
     spec:
       enableServiceLinks: false