Update Red Hat doc for RHUI 4- Incident 356442948

Update Red Hat doc for RHUI 4- Incident 356442948 
Incident 356442948 : No documentation for RHEL9 RHUI (rhui4-1.microsoft.com) | 2212200060001070

Author: mathapli

articles/virtual-machines/workloads/redhat/redhat-rhui.md

@@ -204,12 +204,20 @@ If you're using a network configuration to further restrict access from RHEL PAY
 
 ```
 # Azure Global
+RHUI 3 
 13.91.47.76
 40.85.190.91
 52.187.75.218
 52.174.163.213
 52.237.203.198
 
+RHUI 4
+westeurope - 52.136.197.163
+southcentralus - 20.225.226.182
+eastus - 52.142.4.99
+australiaeast - 20.248.180.252
+southeastasia - 20.24.186.80
+
 # Azure US Government
 13.72.186.193
 13.72.14.155