Today fased issue. After restart Airflow in k8s pods crashed.

[myl82]

Defaulted container "airflow-scheduler" out of: airflow-scheduler, dags-git-sync, install-pip-packages (init), dags-git-clone (init), check-db (init), wait-for-db-migrations (init)
Traceback (most recent call last):
  File "/home/airflow/.local/lib/python3.9/site-packages/pydantic/_internal/_typing_extra.py", line 558, in _eval_type_backport
    return _eval_type(value, globalns, localns, type_params)
  File "/home/airflow/.local/lib/python3.9/site-packages/pydantic/_internal/_typing_extra.py", line 592, in _eval_type
    return typing._eval_type(  # type: ignore
  File "/usr/local/lib/python3.9/typing.py", line 292, in _eval_type
    return t._evaluate(globalns, localns, recursive_guard)
  File "/usr/local/lib/python3.9/typing.py", line 554, in _evaluate
    eval(self.__forward_code__, globalns, localns),
  File "<string>", line 1, in <module>
TypeError: unsupported operand type(s) for |: 'type' and 'NoneType'

TypeError: Unable to evaluate type annotation 'logging.Logger | None'. If you are making use of the new typing syntax (unions using `|` since Python 3.10 or builtins subscripting since Python 3.9), you should either replace the use of new syntax with the existing `typing` constructs or install the `eval_type_backport` package.

Issue related to pydantic lib update:

pydantic: 2.9.2  --> 2.10.1
pydantic_core: 2.23.4 --> 2.27.1

fix version in helm values helped me:

airflow:
......
  extraPipPackages:
  - stripe==10.5.0
  - matplotlib==3.9.1
  - apache-airflow-providers-slack==7.2.0
  - closeio==2.1
  - apache-airflow-providers-google==10.21.0
  - pydantic==2.9.2
  - pydantic_core==2.23.4
.....

Think, need to update Python inside image to 3.10 ?