Merge pull request #227590 from kabharati/patch-45

Update release-notes.md

Author: prmerger-automator[bot]

articles/postgresql/flexible-server/release-notes.md

@@ -19,6 +19,7 @@ This page provides latest news and updates regarding feature additions, engine v
 ## Release: February 2023
 * Public preview of [Autovacuum Metrics](./concepts-monitoring.md#autovacuum-metrics) for Azure Database for PostgreSQL – Flexible Server.
 *  Support for [extension](concepts-extensions.md) semver with new servers<sup>$</sup> 
+*  Public Preview of [Major Version Upgrade](concepts-major-version-upgrade.md) for Azure Database for PostgreSQL – Flexible Server.
 
 ## Release: January 2023
 * General availability of [Azure Active Directory Support](./concepts-azure-ad-authentication.md) for Azure Database for PostgreSQL - Flexible Server in all Azure Public Regions