chore(deps): update helm release cert-manager to v1.18.0 (#593)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

kubernetes-services/templates/cert-manager.yaml

@@ -13,7 +13,7 @@ spec:
   sources:
     - repoURL: https://charts.jetstack.io
       chart: cert-manager
-      targetRevision: v1.17.2
+      targetRevision: v1.18.0
       helm:
         values: |
           prometheus: