Update database-overview.md with retirement notice

[BandaruDheeraj]

Added retirement notice for database connections.

[prmerger-automator]

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[learn-build-service-prod]

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[Copilot]

Pull Request Overview

This PR adds a retirement notice to the database connections documentation for Azure Static Web Apps, informing users that the feature will be discontinued on November 30, 2025.

Key Changes:

• Added an IMPORTANT notice block alerting users to the upcoming retirement of Database Connections

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[Copilot]

Corrected capitalization of 'NOTICE' to 'Notice' for consistency with standard documentation style.

Suggested change

	> Retirement NOTICE: Database Connections for Static Web Apps ends November 30, 2025. Migrate now to avoid disruption.
	> Retirement Notice: Database Connections for Static Web Apps ends November 30, 2025. Migrate now to avoid disruption.

[v-dirichards]

@v1212

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
#label: "missed-content-complete"