Increment python debugger version in preparation for releasing 3.7.
Increment python debugger version in preparation for releasing 3.7.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=208671429

GoogleCloudPlatform/cloud-debug-python,GoogleCloudPlatform/cloud-debug-python,GoogleCloudPlatform/cloud-debug-python