Update Argo to 2.1.8

chart/values.yaml

@@ -577,7 +577,7 @@ addons:
     git:
       repo: https://repo1.dso.mil/platform-one/big-bang/apps/core/argocd.git
       path: "./chart"
-      tag: "3.27.1-bb.4"
+      tag: "3.28.1-bb.0"
 
     # -- Flux reconciliation overrides specifically for the ArgoCD Package
     flux: {}