chore(deps): update helm release sealed-secrets to v2.17.9

Author: renovate[bot]

kubernetes-services/templates/sealed-secrets.yaml

@@ -13,7 +13,7 @@ spec:
   source:
     chart: sealed-secrets
     repoURL: https://bitnami-labs.github.io/sealed-secrets
-    targetRevision: 2.17.7
+    targetRevision: 2.17.9
   syncPolicy:
     automated:
       prune: true