Update Helm release external-secrets to v1.2.1

Author: renovate[bot]

kubernetes/platform/external-secrets/app/base/helm.yaml

@@ -8,7 +8,7 @@ spec:
   chart:
     spec:
       chart: external-secrets
-      version: 1.2.0
+      version: 1.2.1
       sourceRef:
         kind: HelmRepository
         name: external-secrets