Update diagnostic-settings.md

Updating date.

Author: rboucher

articles/azure-monitor/essentials/diagnostic-settings.md

@@ -6,7 +6,7 @@ ms.author: robb
 services: azure-monitor
 ms.topic: conceptual
 ms.custom:
-ms.date: 02/06/2023
+ms.date: 03/12/2024
 ms.reviewer: lualderm
 ---