chore(deps): update helm release cert-manager to v1.16.2

| datasource | package      | from    | to      |
| ---------- | ------------ | ------- | ------- |
| helm       | cert-manager | v1.16.1 | v1.16.2 |

cluster/core/cert-manager/helm-release.yaml

@@ -9,7 +9,7 @@ spec:
   chart:
     spec:
       chart: cert-manager
-      version: v1.16.1
+      version: v1.16.2
       sourceRef:
         kind: HelmRepository
         name: jetstack-charts

cluster/crds/cert-manager/kustomization.yaml

@@ -2,4 +2,4 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
   # renovate: registryUrl=https://charts.jetstack.io chart=cert-manager
-  - https://github.com/jetstack/cert-manager/releases/download/v1.16.1/cert-manager.crds.yaml
+  - https://github.com/jetstack/cert-manager/releases/download/v1.16.2/cert-manager.crds.yaml