chore(deps-dev): bump the dev-dependencies group with 4 updates

Bumps the dev-dependencies group with 4 updates: [black](https://github.com/psf/black), [pytest](https://github.com/pytest-dev/pytest), [ruff](https://github.com/astral-sh/ruff) and [pytest-watcher](https://github.com/olzhasar/pytest-watcher).


Updates `black` from 25.11.0 to 25.12.0
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@25.11.0...25.12.0)

Updates `pytest` from 9.0.1 to 9.0.2
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@9.0.1...9.0.2)

Updates `ruff` from 0.14.6 to 0.14.10
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.14.6...0.14.10)

Updates `pytest-watcher` from 0.4.3 to 0.6.1
- [Release notes](https://github.com/olzhasar/pytest-watcher/releases)
- [Changelog](https://github.com/olzhasar/pytest-watcher/blob/master/CHANGELOG.md)
- [Commits](olzhasar/pytest-watcher@v0.4.3...v0.6.1)

---
updated-dependencies:
- dependency-name: black
  dependency-version: 25.12.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: dev-dependencies
- dependency-name: pytest
  dependency-version: 9.0.2
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dev-dependencies
- dependency-name: ruff
  dependency-version: 0.14.10
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dev-dependencies
- dependency-name: pytest-watcher
  dependency-version: 0.6.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: dev-dependencies
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

poetry.lock

@@ -53,7 +53,7 @@ pyright = "^1.1.391"
 pytest = ">=8.3.4,<10.0.0"
 pytest-cov = ">=6,<8"
 ruff = ">=0.8.6,<0.15.0"
-pytest-watcher = "^0.4.3"
+pytest-watcher = ">=0.4.3,<0.7.0"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]