FIX(velero): velero-ui auth: use explicit env

- instead of en...

velero/argocd/velero-ui.yaml

@@ -39,10 +39,18 @@ spec:
           port: 3000
 
         # Environment variables
-        env: []
+        env:
-        envFrom:
+          - name: BASIC_AUTH_USERNAME
-          - secretRef:
+            valueFrom:
+              secretKeyRef:
                 name: velero-ui-secret
+                key: username
+          - name: BASIC_AUTH_PASSWORD
+            valueFrom:
+              secretKeyRef:
+                name: velero-ui-secret
+                key: password
+        envFrom: []
 
         # Pod security context
         podSecurityContext: