docs: Add CSI secret driver to the secret management options (argopro…

…j#10900)

Signed-off-by: Duncan <62943186+duncan485@users.noreply.github.com>

Signed-off-by: Duncan <62943186+duncan485@users.noreply.github.com>
Signed-off-by: emirot <emirot.nolan@gmail.com>

docs/operator-manual/secret-management.md

@@ -12,5 +12,6 @@ Argo CD is un-opinionated about how secrets are managed. There's many ways to do
 * [KSOPS](https://github.com/viaduct-ai/kustomize-sops#argo-cd-integration)
 * [argocd-vault-plugin](https://github.com/argoproj-labs/argocd-vault-plugin)
 * [argocd-vault-replacer](https://github.com/crumbhole/argocd-vault-replacer)
+* [Kubernetes Secrets Store CSI Driver](https://github.com/kubernetes-sigs/secrets-store-csi-driver)
 
 For discussion, see [#1364](https://github.com/argoproj/argo-cd/issues/1364)