chore(deps): update helm release sealed-secrets to v2.17.6

Author: renovate[bot]

bootstrap/kubernetes-base/sealed-secrets.tf

@@ -1,7 +1,7 @@
 resource "helm_release" "sealed_secrets" {
   repository = "https://bitnami-labs.github.io/sealed-secrets"
   chart      = "sealed-secrets"
-  version    = "2.17.3"
+  version    = "2.17.6"
 
   name      = "sealed-secrets-controller"
   namespace = "kube-system"