Fix Azure Batch provider import error by capping azure-batch<15

[wjddn279]

fix ci error (https://github.com/apache/airflow/actions/runs/25411966126/job/74536991640?pr=66141)

ImportError while importing test module '/opt/airflow/providers/microsoft/azure/tests/unit/microsoft/azure/operators/test_batch.py'.
Hint: make sure your test modules/packages have valid Python names.
Traceback:
/usr/python/lib/python3.10/importlib/__init__.py:126: in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
providers/microsoft/azure/tests/unit/microsoft/azure/operators/test_batch.py:27: in <module>
    from airflow.providers.microsoft.azure.hooks.batch import AzureBatchHook
/usr/python/lib/python3.10/site-packages/airflow/providers/microsoft/azure/hooks/batch.py:25: in <module>
    from azure.batch import BatchServiceClient, batch_auth, models as batch_models
E   ImportError: cannot import name 'BatchServiceClient' from 'azure.batch' (/usr/python/lib/python3.10/site-packages/azure/batch/__init__.py)
------------------------------------------------------------ generated xml file: /files/test_result-providers_-amazon_celery_googl-sqlite.xml ------------------------------------------------------------
======================================================================================== short test summary info =========================================================================================
ERROR providers/microsoft/azure/tests/unit/microsoft/azure/hooks/test_batch.py
ERROR providers/microsoft/azure/tests/unit/microsoft/azure/operators/test_batch.py

The azure-batch SDK 15.x line (15.1.0 GA released on PyPI on 2026-05-01) is a complete rewrite that removes BatchServiceClient in favor of the new BatchClient, along with renamed models, methods, and parameters. Therefore, this pins the dependency to <15.0.0

ref https://github.com/Azure/azure-sdk-for-python/blob/main/sdk/batch/azure-batch/CHANGELOG.md

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[amoghrajesh]

Approved with comment

[parkhojeong]

LGTM !

is there a reason uv.lock is not updated here? Since this changes the azure-batch dependency specifier, I would expect the lockfile metadata to reflect the new <15.0.0 cap as well. I also ran uv lock --check locally, and it reported that uv.lock needs to be updated.

[Lee-W]

I think it was never actually updated to 15. We're at the latest version of 14 and thus no update is required