build(deps): bump anyio from 4.8.0 to 4.9.0 in /clients/py (#162)

Bumps [anyio](https://github.com/agronholm/anyio) from 4.8.0 to 4.9.0.
- [Release notes](https://github.com/agronholm/anyio/releases)
- [Changelog](https://github.com/agronholm/anyio/blob/master/docs/versionhistory.rst)
- [Commits](agronholm/anyio@4.8.0...4.9.0)

---
updated-dependencies:
- dependency-name: anyio
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

clients/py/requirements.txt

@@ -1,4 +1,4 @@
-anyio==4.8.0
+anyio==4.9.0
 certifi==2025.1.31
 construct==2.10.68
 construct-typing==0.5.6