Update Helm release external-secrets to v0.18.1

Author: renovate[bot]

infrastructure/controllers/external-secrets/kustomization.yaml

@@ -13,7 +13,7 @@ helmCharts:
   - name: external-secrets
     repo: https://charts.external-secrets.io
     releaseName: external-secrets
-    version: 0.18.0
+    version: 0.18.1
     valuesFile: values.yaml
 
 patches: