Disallowing types-protobuf 5.29.1.20250402 for google to fix mypy

[amoghrajesh]

types-protobuf 5.29.1.20250402 was released today and it seems that this one is a partial stub package. https://peps.python.org/pep-0561/#partial-stub-packages.

Due to this, mypy complains of [import-untyped] which basically means type annotations arent present.

Disallowing this version for google provider. Google provider depends on devel-common so in conjunction the right version will be picked imo.

Example failure:

providers/google/src/airflow/providers/google/cloud/hooks/dataproc.py:60: error:
Library stubs not installed for "google.protobuf.field_mask_pb2" 
[import-untyped]
        from google.protobuf.field_mask_pb2 import FieldMask
    ^
providers/google/src/airflow/providers/google/cloud/hooks/cloud_memorystore.py:53: error:
Library stubs not installed for "google.protobuf.field_mask_pb2" 
[import-untyped]
        from google.protobuf.field_mask_pb2 import FieldMask

https://github.com/apache/airflow/actions/runs/14214004343/job/39826852033

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