Bump httpx from 0.13.3 to 0.23.0

Bumps [httpx](https://github.com/encode/httpx) from 0.13.3 to 0.23.0.
- [Release notes](https://github.com/encode/httpx/releases)
- [Changelog](https://github.com/encode/httpx/blob/master/CHANGELOG.md)
- [Commits](encode/httpx@0.13.3...0.23.0)

---
updated-dependencies:
- dependency-name: httpx
  dependency-type: direct:production
...

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

requirements.txt

@@ -1,7 +1,7 @@
 chardet==3.0.4
 aiohttp==3.7.4
 beautifulsoup4==4.9.3
-httpx==0.13.3
+httpx==0.23.0
 Flask==2.1.2
 celery==4.4.5
 Flask-Cors==3.0.9