Bump the python-packages group with 6 updates

Bumps the python-packages group with 6 updates:

| Package | From | To |
| --- | --- | --- |
| [pydantic](https://github.com/pydantic/pydantic) | `2.12.4` | `2.12.5` |
| [celery](https://github.com/celery/celery) | `5.5.3` | `5.6.0` |
| [fastapi](https://github.com/fastapi/fastapi) | `0.121.3` | `0.123.0` |
| [asyncpg](https://github.com/MagicStack/asyncpg) | `0.30.0` | `0.31.0` |
| [mypy](https://github.com/python/mypy) | `1.18.2` | `1.19.0` |
| [flake8-pyproject](https://github.com/john-hen/Flake8-pyproject) | `1.2.3` | `1.2.4` |


Updates `pydantic` from 2.12.4 to 2.12.5
- [Release notes](https://github.com/pydantic/pydantic/releases)
- [Changelog](https://github.com/pydantic/pydantic/blob/main/HISTORY.md)
- [Commits](pydantic/pydantic@v2.12.4...v2.12.5)

Updates `celery` from 5.5.3 to 5.6.0
- [Release notes](https://github.com/celery/celery/releases)
- [Changelog](https://github.com/celery/celery/blob/main/Changelog.rst)
- [Commits](celery/celery@v5.5.3...v5.6.0)

Updates `fastapi` from 0.121.3 to 0.123.0
- [Release notes](https://github.com/fastapi/fastapi/releases)
- [Commits](fastapi/fastapi@0.121.3...0.123.0)

Updates `asyncpg` from 0.30.0 to 0.31.0
- [Release notes](https://github.com/MagicStack/asyncpg/releases)
- [Commits](MagicStack/asyncpg@v0.30.0...v0.31.0)

Updates `mypy` from 1.18.2 to 1.19.0
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.18.2...v1.19.0)

Updates `flake8-pyproject` from 1.2.3 to 1.2.4
- [Release notes](https://github.com/john-hen/Flake8-pyproject/releases)
- [Commits](john-hen/Flake8-pyproject@1.2.3...1.2.4)

---
updated-dependencies:
- dependency-name: pydantic
  dependency-version: 2.12.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: python-packages
- dependency-name: celery
  dependency-version: 5.6.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python-packages
- dependency-name: fastapi
  dependency-version: 0.123.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python-packages
- dependency-name: asyncpg
  dependency-version: 0.31.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: python-packages
- dependency-name: mypy
  dependency-version: 1.19.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: python-packages
- dependency-name: flake8-pyproject
  dependency-version: 1.2.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: python-packages
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]