RST check is broken

[julientinguely-da]

Getting this failure when changing .rst files and trying to commit:

Check sphinx format.................................................................Failed
- hook id: rstcheck
- exit code: 1

Traceback (most recent call last):
  File "/home/julientinguely/.cache/pre-commit/repop65_4naz/py_env-python3.12/bin/rstcheck", line 5, in <module>
    from rstcheck._cli import main
  File "/home/julientinguely/.cache/pre-commit/repop65_4naz/py_env-python3.12/lib/python3.12/site-packages/rstcheck/_cli.py", line 11, in <module>
    from rstcheck_core import _extras, config as config_mod, runner
  File "/home/julientinguely/.cache/pre-commit/repop65_4naz/py_env-python3.12/lib/python3.12/site-packages/rstcheck_core/config.py", line 13, in <module>
    import pydantic
  File "/nix/store/4d9559v70h3nqh53gmymdb6aggkgjr7g-python3.13-pydantic-2.11.7/lib/python3.13/site-packages/pydantic/__init__.py", line 5, in <module>
    from ._migration import getattr_migration
  File "/nix/store/4d9559v70h3nqh53gmymdb6aggkgjr7g-python3.13-pydantic-2.11.7/lib/python3.13/site-packages/pydantic/_migration.py", line 4, in <module>
    from .version import version_short
  File "/nix/store/4d9559v70h3nqh53gmymdb6aggkgjr7g-python3.13-pydantic-2.11.7/lib/python3.13/site-packages/pydantic/version.py", line 5, in <module>
    from pydantic_core import __version__ as __pydantic_core_version__
  File "/nix/store/q89x74k8f7simiysf83fcfm11x8pbp3h-python3.13-pydantic-core-2.33.2/lib/python3.13/site-packages/pydantic_core/__init__.py", line 6, in <module>
    from ._pydantic_core import (
ModuleNotFoundError: No module named 'pydantic_core._pydantic_core'