Update Helm release external-secrets to v0.20.3

Author: renovate-bot

apps/external-secrets/helm-release.yaml

@@ -9,7 +9,7 @@ spec:
   chart:
     spec:
       chart: external-secrets
-      version: 0.19.2
+      version: 0.20.3
       sourceRef:
         kind: HelmRepository
         name: external-secrets