[Fabric Bot] Update Form Recognizer Contacts (Azure#28316)

The focus of these changes is to update the bot rules to mirror the CODEOWNERS changes made in Azure#28300.

Author: jsquire

.github/fabricbot.json

@@ -1463,7 +1463,7 @@
           ],
           "mentionees": [
             "ctstone",
-            "anrothMSFT"
+            "vkurpad"
           ]
         },
         {