feat(helm): update chart cert-manager to v1.15.1

| datasource | package      | from   | to      |
| ---------- | ------------ | ------ | ------- |
| helm       | cert-manager | v1.9.0 | v1.15.1 |

Author: chii-bot[bot]

cluster/apps/kube-system/cert-manager/helm-release.yaml

@@ -10,7 +10,7 @@ spec:
     spec:
       # renovate: registryUrl=https://charts.jetstack.io/
       chart: cert-manager
-      version: v1.9.0
+      version: v1.15.1
       sourceRef:
         kind: HelmRepository
         name: jetstack-charts