Update Helm release cert-manager to v1.18.2

Author: renovate-bot

kluster-manifests/argocd-apps/infrastructure/Application-certmanager.yaml

@@ -18,7 +18,7 @@ spec:
       - CreateNamespace=true
   sources:
     - repoURL: https://charts.jetstack.io
-      targetRevision: v1.17.4
+      targetRevision: v1.18.2
       chart: cert-manager
       helm:
         releaseName: cert-manager