Add Envoy Data Plane dependency

[tarun-google]

Adding envoy_data_plane dependency. This helps us add Envoy client in ApacheBeam to support ratelimiter(#37135)

Notes

1. We need to add v3 rls proto to beam for supporting envoy client.
2. It is difficult to add .proto file directly and manage its versions, so using this library to provide the protobufs that we can directly use
3. This library brings grpcio, protobuf dependencies(which is expected). Which conflicts with grpcio pinning([Python] Significant test flakiness after upgrading to grpcio 1.66.0  grpc/grpc#37710 (comment)) for python <313. It also conflicts with ml tests with tensorflow which works on lower protobuf(<6) versions. So i am using older versions of envoy-data-plane for py <313. we can upgrade once grpc issue is resolved and ml dependencies start supporting latest versions(not sure if this is right approach). My usecase for now works as i only use proto.

GitHub Actions Tests Status (on master branch)

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[gemini-code-assist]

Summary of Changes

Hello @tarun-google, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a new core dependency, envoy-data-plane, specifically targeting Python 3.13+ environments. This addition is crucial for integrating functionalities that leverage Envoy's data plane capabilities within the Python SDK. Concurrently, the necessary license and notice information for grpcio-tools has been updated to maintain compliance.

Highlights

• New Dependency Added: The envoy-data-plane package has been added as a new installation requirement for Python versions 3.13 and above, with version constraints >=1.0.3,<2.
• License Information Update: License and notice URLs for grpcio-tools have been added to the dep_urls_py.yaml file, ensuring proper attribution for this dependency.

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[github-actions]

Assigning reviewers:

R: @shunping for label python.

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[tarun-google]

Run Python_ML PreCommit 3.13

[tarun-google]

Run Python_Runners PreCommit 3.12

[tarun-google]

R: @damccorm , @tvalentyn

[github-actions]

Stopping reviewer notifications for this pull request: review requested by someone other than the bot, ceding control. If you'd like to restart, comment assign set of reviewers

[tvalentyn]

could you please add a comment to reconcile these versions once we upgrade to a newer version of grpcio?