chore: add Voyager Digital to USERS.md (argoproj#11735)

Signed-off-by: hopisaurus <hopisaurus@gmail.com>

Signed-off-by: hopisaurus <hopisaurus@gmail.com>
Signed-off-by: emirot <emirot.nolan@gmail.com>

USERS.md

@@ -240,6 +240,7 @@ Currently, the following organizations are **officially** using Argo CD:
 1. [Virtuo](https://www.govirtuo.com/)
 1. [VISITS Technologies](https://visits.world/en)
 1. [Volvo Cars](https://www.volvocars.com/)
+1. [Voyager Digital](https://www.investvoyager.com/)
 1. [VSHN - The DevOps Company](https://vshn.ch/)
 1. [Walkbase](https://www.walkbase.com/)
 1. [Webstores](https://www.webstores.nl)