Updating date

New classifications were added yesterday. Updating date to match.

Author: whhender

articles/purview/supported-classifications.md

@@ -6,7 +6,7 @@ ms.author: ankitgup
 ms.service: purview
 ms.subservice: purview-data-map
 ms.topic: reference
-ms.date: 09/27/2021
+ms.date: 03/07/2023
 #Customer intent: As a data steward or catalog administrator, I need to understand what's supported under classifications.
 ---