chore(cert-manager): Updates cert-manager to latest chart version

Author: nicholaskuechler

apps/infra/cert-manager.yaml

@@ -3,7 +3,7 @@ component: cert-manager
 sources:
   - repoURL: https://charts.jetstack.io
     chart: cert-manager
-    targetRevision: '1.15.2'
+    targetRevision: '1.18.2'
     helm:
       releaseName: cert-manager
       valuesObject: