Add Deprecation note for Neon Postgres Deprecation

[Shekar2004]

Description

Neon Postgres is retired and hence, this change aims to add the deprecation note for its packages.

Please add an informative description that covers that changes made by the pull request and link all relevant issues.

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• The pull request does not introduce [breaking changes]
• CHANGELOG is updated for new features, bug fixes or other significant changes.
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[Copilot]

Pull request overview

This PR deprecates the azure-mgmt-neonpostgres package in response to Neon Postgres retirement by updating package metadata and adding deprecation messaging for consumers.

Changes:

• Mark the package as inactive via PyPI classifier updates.
• Add deprecation notice text to README and CHANGELOG, and bump version to 1.0.1.
• Disable sdk_packaging.toml auto-update for this package.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
sdk/neonpostgres/azure-mgmt-neonpostgres/setup.py	Updates PyPI classifier to indicate the package is inactive.
sdk/neonpostgres/azure-mgmt-neonpostgres/sdk_packaging.toml	Disables auto-update for packaging metadata.
sdk/neonpostgres/azure-mgmt-neonpostgres/azure/mgmt/neonpostgres/_version.py	Bumps library version to 1.0.1.
sdk/neonpostgres/azure-mgmt-neonpostgres/README.md	Adds top-level deprecation notice for end users.
sdk/neonpostgres/azure-mgmt-neonpostgres/CHANGELOG.md	Adds 1.0.1 entry documenting deprecation.

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[Copilot]

The deprecation notice would be more informative if it included a pointer to the Neon Postgres retirement announcement and/or any recommended alternative/migration guidance (similar to other deprecated packages’ READMEs).

Suggested change

This package has been deprecated and will no longer be maintained after 03-12-2026. This package will only receive security fixes until 03-12-2026.

This package has been deprecated and will no longer be maintained after 03-12-2026. This package will only receive security fixes until 03-12-2026. This deprecation is aligned with the retirement of the Azure Database for PostgreSQL – Neon Server (Neon Postgres) service. For timelines, impact details, and migration guidance, see the official Azure retirement announcement for Neon Postgres (for example, in the Azure Updates site), and plan to migrate your workloads to Azure Database for PostgreSQL – Flexible Server or another supported PostgreSQL offering before the retirement date.