fix(deps): allow protobuf < 5.0.0

[parthea]

BEGIN_COMMIT_OVERRIDE
fix(deps): allow protobuf < 5.0.0
fix(deps): require proto-plus >= 1.22.0
END_COMMIT_OVERRIDE

[unforced]

=================================== FAILURES ===================================
___________________ test_streaming_automl_action_recognition ___________________

capsys = <_pytest.capture.CaptureFixture object at 0x7f7b5b79e790>
video_path = '/tmp/pytest-of-kbuilder/pytest-0/video0/file.mp4'

    @pytest.mark.flaky(max_runs=3, min_passes=1)
    def test_streaming_automl_action_recognition(capsys, video_path):
        project_id = os.environ["GOOGLE_CLOUD_PROJECT"]
        model_id = "6597443600609443840"
        beta_snippets.streaming_automl_action_recognition(video_path, project_id, model_id)
        out, _ = capsys.readouterr()
>       assert "segment" in out
E       AssertionError: assert 'segment' in 'com.google.cloud.ai.platform.common.errors.AiPlatformException: code=NOT_FOUND, message=The Model does not exist., cause=null\n'

beta_snippets_test.py:172: AssertionError

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