Fix several deprecation warnings related to airflow.sdk

[Dev-iL]

Fixing some deprecations reported by breeze:

{"category": "DeprecationWarning", "message": "The `airflow.models.baseoperator.BaseOperator` attribute is deprecated. Please use `'airflow.sdk.bases.operator.BaseOperator'`.", "filename": "devel-common/src/tests_common/test_utils/mock_operators.py", "lineno": 24, "when": "collect", "node_id": null, "param_id": null, "group": "other", "count": 1}
{"category": "DeprecationWarning", "message": "The `airflow.models.baseoperator.BaseOperator` attribute is deprecated. Please use `'airflow.sdk.bases.operator.BaseOperator'`.", "filename": "airflow-core/tests/unit/api_fastapi/core_api/routes/public/test_task_instances.py", "lineno": 37, "when": "collect", "node_id": null, "param_id": null, "group": "tests", "count": 1}
{"category": "DeprecationWarning", "message": "The `airflow.models.baseoperator.BaseOperator` attribute is deprecated. Please use `'airflow.sdk.bases.operator.BaseOperator'`.", "filename": "devel-common/src/tests_common/test_utils/mock_operators.py", "lineno": 24, "when": "runtest", "node_id": "airflow-core/tests/unit/callbacks/test_callback_requests.py::TestCallbackRequest::test_from_json", "param_id": "None-TaskCallbackRequest", "group": "other", "count": 1}
{"category": "DeprecationWarning", "message": "The `airflow.utils.timezone.coerce_datetime` attribute is deprecated. Please use `'airflow.sdk.timezone.coerce_datetime'`.", "filename": "providers/standard/src/airflow/providers/standard/sensors/time.py", "lineno": 93, "when": "runtest", "node_id": "airflow-core/tests/unit/callbacks/test_callback_requests.py::TestCallbackRequest::test_from_json", "param_id": "None-TaskCallbackRequest", "group": "providers", "count": 4}
{"category": "DeprecationWarning", "message": "The `airflow.utils.timezone.convert_to_utc` attribute is deprecated. Please use `'airflow.sdk.timezone.convert_to_utc'`.", "filename": "providers/standard/src/airflow/providers/standard/sensors/time.py", "lineno": 100, "when": "runtest", "node_id": "airflow-core/tests/unit/callbacks/test_callback_requests.py::TestCallbackRequest::test_from_json", "param_id": "None-TaskCallbackRequest", "group": "providers", "count": 4}
{"category": "DeprecationWarning", "message": "The `airflow.utils.timezone.datetime` attribute is deprecated. Please use `'airflow.sdk.timezone.datetime'`.", "filename": "airflow-core/src/airflow/example_dags/standard/example_external_task_parent_deferrable.py", "lineno": 23, "when": "runtest", "node_id": "airflow-core/tests/unit/callbacks/test_callback_requests.py::TestCallbackRequest::test_from_json", "param_id": "None-TaskCallbackRequest", "group": "other", "count": 1}
{"category": "DeprecationWarning", "message": "The `airflow.models.baseoperator.BaseOperator` attribute is deprecated. Please use `'airflow.sdk.bases.operator.BaseOperator'`.", "filename": "providers/standard/src/airflow/providers/standard/operators/hitl.py", "lineno": 32, "when": "runtest", "node_id": "airflow-core/tests/unit/callbacks/test_callback_requests.py::TestCallbackRequest::test_from_json", "param_id": "None-TaskCallbackRequest", "group": "providers", "count": 1}

CC: @amoghrajesh

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[Copilot]

Pull Request Overview

This PR fixes several deprecation warnings related to the transition from legacy Airflow modules to the new airflow.sdk package structure. The changes update import statements to use the recommended SDK modules instead of the deprecated legacy modules.

Key changes:

• Update imports for BaseOperator from airflow.models.baseoperator to airflow.sdk.bases.operator
• Update timezone-related imports from airflow.utils.timezone to airflow.sdk.timezone
• Add version compatibility checks to conditionally import from the appropriate module based on Airflow version

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
providers/standard/src/airflow/providers/standard/sensors/time.py	Updates timezone import to use SDK module
providers/standard/src/airflow/providers/standard/operators/hitl.py	Updates BaseOperator import to use SDK module
providers/standard/src/airflow/providers/standard/example_dags/example_external_task_parent_deferrable.py	Updates datetime import to use SDK timezone module
devel-common/src/tests_common/test_utils/mock_operators.py	Adds version compatibility for BaseOperator import with conditional logic
airflow-core/tests/unit/cli/commands/test_dag_command.py	Adds version compatibility for BaseOperator import with conditional logic

[potiuk]

There are some errors though :(

[Dev-iL]

Fixed now!

[amoghrajesh]

@Dev-iL thanks for working on this, a general set of comments that apply throughout the PR.