Update TOC.yml

Author: cynthn

articles/virtual-machines/TOC.yml

@@ -1603,6 +1603,8 @@
   - name: Overview
     displayName: Security Overview
     href: ../security/fundamentals/virtual-machines-overview.md?toc=/azure/virtual-machines/toc.json
+  - name: Zero trust principles
+    href: /security/zero-trust/azure-infrastructure-virtual-machines
   - name: Microsoft Defender for Cloud
     href: ../security-center/security-center-introduction.md
     maintainContext: true