build(deps-dev): bump httpx2 from 2.3.0 to 2.5.0

Bumps [httpx2](https://github.com/pydantic/httpx2) from 2.3.0 to 2.5.0.
- [Release notes](https://github.com/pydantic/httpx2/releases)
- [Changelog](https://github.com/pydantic/httpx2/blob/main/src/httpx2/CHANGELOG.md)
- [Commits](pydantic/httpx2@v2.3.0...v2.5.0)

---
updated-dependencies:
- dependency-name: httpx2
  dependency-version: 2.5.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]