build(deps-dev): bump schemathesis in /clients/python

Bumps [schemathesis](https://github.com/schemathesis/schemathesis) from 4.3.6 to 4.8.0.
- [Release notes](https://github.com/schemathesis/schemathesis/releases)
- [Changelog](https://github.com/schemathesis/schemathesis/blob/master/CHANGELOG.md)
- [Commits](schemathesis/schemathesis@v4.3.6...v4.8.0)

---
updated-dependencies:
- dependency-name: schemathesis
  dependency-version: 4.8.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

clients/python/poetry.lock

@@ -57,7 +57,7 @@ pytest-asyncio = "^1.1.0"
 requests = "^2.32.2"
 types-python-dateutil = "^2.9.0.20240906"
 pytest-html = "^4.1.1"
-schemathesis = ">=4.0.3,<=4.3.6"
+schemathesis = ">=4.0.3,<=4.8.0"
 
 [tool.coverage.run]
 branch = true