updated setup.py, requirements.txt and changelog.rst for cli v2 release

[lavakumarrepala]

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• Have you run azdev style <YOUR_EXT> locally? (pip install azdev required)
• Have you run python scripts/ci/test_index.py -q locally? (pip install wheel==0.30.0 required)
• My extension version conforms to the Extension version schema

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• My extension description/summary conforms to the Extension Summary Guidelines.

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There is a pipeline to automatically build, upload and publish extension wheels.
Once your pull request is merged into main branch, a new pull request will be created to update src/index.json automatically.
You only need to update the version information in file setup.py and historical information in file HISTORY.rst in your PR but do not modify src/index.json.

[azure-client-tools-bot-prd]

Validation for Breaking Change Starting...

Thanks for your contribution!

[azure-client-tools-bot-prd]

Hi @lavakumarrepala,
Please write the description of changes which can be perceived by customers into HISTORY.rst.
If you want to release a new extension version, please update the version in setup.py as well.

[yonzhan]

Thank you for your contribution! We will review the pull request and get back to you soon.

[github-actions]

The git hooks are available for azure-cli and azure-cli-extensions repos. They could help you run required checks before creating the PR.

Please sync the latest code with latest dev branch (for azure-cli) or main branch (for azure-cli-extensions).
After that please run the following commands to enable git hooks:

pip install azdev --upgrade
azdev setup -c <your azure-cli repo path> -r <your azure-cli-extensions repo path>

[Copilot]

Pull request overview

This PR prepares the Machine Learning CLI v2 extension for the 2.43.0 release by updating release metadata and the pinned Azure ML SDK dependency.

Changes:

• Bumps the extension package version to 2.43.0.
• Finalizes the changelog date for the 2.43.0 release.
• Updates the manual dependency pin for azure-ai-ml to 1.33.0.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
src/machinelearningservices/setup.py	Updates the extension version used for packaging.
src/machinelearningservices/CHANGELOG.rst	Replaces the unreleased heading with the release date.
src/machinelearningservices/azext_mlv2/manual/requirements.txt	Updates the pinned Azure ML SDK dependency version.

[github-actions]

Hi @lavakumarrepala

⚠️ Release Requirements

Module: machinelearningservices

• Please log updates into to src/machinelearningservices/HISTORY.rst
• ⚠️ Please update VERSION to be 2.42.1 in src/machinelearningservices/setup.py

Notes

• For more info about extension versioning, please refer to Extension version schema