feat(helm): update chart metrics-server to 3.12.2

| datasource | package        | from   | to     |
| ---------- | -------------- | ------ | ------ |
| helm       | metrics-server | 3.11.0 | 3.12.2 |

cluster/apps/kube-system/metrics-server/helm-release.yaml

@@ -9,7 +9,7 @@ spec:
   chart:
     spec:
       chart: metrics-server
-      version: 3.11.0
+      version: 3.12.2
       sourceRef:
         kind: HelmRepository
         name: metrics-server