python: bump ruff from 0.15.17 to 0.15.18 in /python/osrd_schemas

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.15.17 to 0.15.18.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.15.17...0.15.18)

---
updated-dependencies:
- dependency-name: ruff
  dependency-version: 0.15.18
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

python/osrd_schemas/pyproject.toml

@@ -8,7 +8,7 @@ requires-python = ">= 3.11"
 dependencies = ["geojson-pydantic ~= 2.1.1", "pydantic>=2.13.4"]
 
 [project.optional-dependencies]
-check = ["pyright ~= 1.1.410", "ruff ~= 0.15.17"]
+check = ["pyright ~= 1.1.410", "ruff~=0.15.18"]
 
 [build-system]
 requires = ["poetry-core>=2.4.1"]