Update how-to-secure-workspace-vnet.md

Updated ms.date

Author: akashdubey-ms

articles/machine-learning/v1/how-to-secure-workspace-vnet.md

@@ -8,7 +8,7 @@ ms.subservice: enterprise-readiness
 ms.reviewer: larryfr
 ms.author: jhirono
 author: jhirono
-ms.date: 06/17/2022
+ms.date: 09/29/2023
 ms.topic: how-to
 ms.custom: UpdateFrequency5, contperf-fy20q4, tracking-python, contperf-fy21q1, security, cliv1, sdkv1, event-tier1-build-2022, build-2023
 ---