[FLINK-35282][FLINK-35520] PyFlink Support for Apache Beam > 2.49

[snuyanzin]

What is the purpose of the change

This is the second attempt for FLINK-35282

Verifying this change

Existing tests cover the change

Does this pull request potentially affect one of the following parts:

• Dependencies (does it add or upgrade a dependency): (yes)
• The public API, i.e., is any changed class annotated with @Public(Evolving): ( no)
• The serializers: (no)
• The runtime per-record code paths (performance sensitive): (no )
• Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: ( no)
• The S3 file system connector: (no)

Documentation

• Does this pull request introduce a new feature? (no)
• If yes, how is the feature documented? (not applicable)

[flinkbot]

CI report:

• 733e19c75d36564d8f702bb638ee633f764757ec Azure: FAILURE

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• @flinkbot run azure re-run the last Azure build

[xaniasd]

hi there @snuyanzin @hlteoh37, are you actively working on this PR? Is there any way I could help with this?

[snuyanzin]

I was here since I thought the only thing which should be fixed here is license related staff However it seems some more things should be done currently I don't have time for that so feel free to continue

[sheinbergon]

@snuyanzin @hlteoh37 what else is needed to complete this PR? This is imposes a limit on somewhat dated proto/grpc versions as well

[xaniasd]

@hlteoh37 I submitted #25541, would you be available for a review?

[snuyanzin]

closed in favor of https://github.com/apache/flink/pull/25541,