Update how-to-manage-azure-ad-users.md

[hkusulja]

Update on docs for 2025 and new version

Reference - https://learn.microsoft.com/en-us/answers/questions/1654133/azure-postgresql-flexible-server-unable-to-drop-ro

https://www.postgresql.org/docs/16/release-16.html

[prmerger-automator]

@hkusulja : Thanks for your contribution! The author(s) and reviewer(s) have been notified to review your proposed change.

[learn-build-service-prod]

Learn Build status updates of commit 010c2f9:

✅ Validation status: passed

File	Status	Preview URL	Details
articles/postgresql/flexible-server/how-to-manage-azure-ad-users.md	✅Succeeded

For more details, please refer to the build report.

For any questions, please:

• Try searching the learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[v-dirichards]

@achudnovskij

Can you review the proposed changes?

Important: When the changes are ready for publication, adding a #sign-off comment is the best way to signal that the PR is ready for the review team to merge.

#label:"aq-pr-triaged"
@MicrosoftDocs/public-repo-pr-review-team

[rothja]

#assign:@markingmyname

[v-dirichards]

@markingmyname

Can you review this PR and determine whether it needs to be closed or merged?

IMPORTANT: When the changes are ready for publication, add a #sign-off comment to signal that the PR is ready for the review team to merge. If the changes no longer apply, add an explanation and a #please-close comment to close the PR.

@MicrosoftDocs/public-repo-pr-review-team