ANPTA - Update vpn-over-expressroute.md

Changing Public facing public IPs per our guidelines.  Part of Co-Pilot Management Review.

https://review.learn.microsoft.com/en-us/help/platform/repo-secrets-alerts-guidelines?branch=main

Author: Grimhild

articles/virtual-wan/vpn-over-expressroute.md

@@ -177,7 +177,7 @@ The device configuration file contains the settings to use when you're configuri
       },
       "vpnSiteConfiguration":{
         "Name":"VPN-over-INet-site",
-        "IPAddress":"13.75.195.234",
+        "IPAddress":"198.51.100.122",
         "LinkName":"VPN-over-INet"
       },
       "vpnSiteConnections":[{
@@ -188,8 +188,8 @@ The device configuration file contains the settings to use when you're configuri
         },
         "gatewayConfiguration":{
           "IpAddresses":{
-            "Instance0":"51.143.63.104",
-            "Instance1":"52.137.90.89"
+            "Instance0":"203.0.113.186",
+            "Instance1":"203.0.113.195"
           }
         },
         "connectionConfiguration":{