Update SignClient.json

Author: ozanMSFT

config/SignClient.json

@@ -2,7 +2,7 @@
   "SignClient": {
     "AzureAd": {
       "AADInstance": "https://login.microsoftonline.com/",
-      "ClientId": "c248d68a-ba6f-4aa9-8a68-71fe872063f8",
+      "ClientId": "07c2bbea-56a0-4734-ba08-23ec2a86fb80",
       "TenantId": "16076fdc-fcc1-4a15-b1ca-32c9a255900e"
     },
     "Service": {