build(deps-dev): bump httpx from 0.25.0 to 0.25.1 (#1716)

Bumps [httpx](https://github.com/encode/httpx) from 0.25.0 to 0.25.1.
- [Release notes](https://github.com/encode/httpx/releases)
- [Changelog](https://github.com/encode/httpx/blob/master/CHANGELOG.md)
- [Commits](encode/httpx@0.25.0...0.25.1)

---
updated-dependencies:
- dependency-name: httpx
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]