chore(chart-deps): update sealed-secrets to version 2.18.1

[svcAPLBot]

This PR updates the dependency sealed-secrets to version 2.18.1.

[svcAPLBot]

Comparison of Helm chart templating output:

@@ data.core.yaml @@
! ± value change in multiline text (one insert, one deletion)
  adminApps:
  - deps:
    - prometheus
    ingress:
  
  [549 lines unchanged)]
  
      title: RabbitMQ
    sealed-secrets:
      about: Sealed Secrets is a Kubernetes Custom Resource Definition Controller which
        allows you to store even sensitive information in Git repositories.
-     appVersion: 0.34.0
+     appVersion: 0.35.0
      integration: App Platform uses Sealed Secrets to provide a secure way to store
        Kubernetes secrets in Git repositories. Sealed Secrets can be used to store
        secrets in the values repository.
      license: Apache 2.0
  
  [168 lines unchanged)]
  
      svc: tekton-dashboard
      type: public
    name: tekton
    ownHost: true






@@ spec.template.spec.containers.controller.image @@
! ± value change
- docker.io/bitnami/sealed-secrets-controller:0.34.0
+ docker.io/bitnami/sealed-secrets-controller:0.35.0