External secrets values are not replaced in webhook settings

[MrFreezeex]

Checklist:

• I've searched in the docs and FAQ for my answer: https://bit.ly/argocd-faq.
• I've included steps to reproduce the bug.
• I've pasted the output of argocd version.

Describe the bug

You can't reference other secrets in all the webhook settings with the the syntax $:.

To Reproduce

Have something like that:

apiVersion: v1
kind: Secret
stringData:
  webhook.github.secret: "mysecrethere"
metadata:
  labels:
    app.kubernetes.io/part-of: argocd
  name: argocd-helm-values
  namespace: argocd
type: Opaque

And set "webhook.github.secret" in "argocd-secret" to "$argocd-helm-values:webhook.github.secret". The value will not be replaced and you can check that by configuring the webhook with litterally "$argocd-helm-values:webhook.github.secret" (while any other value will not work meaning that the secret is not correctly replaced).

Expected behavior

The secret to be replaced

Screenshots

Version

Paste the output from `argocd version` here.

Logs

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