deps: update httpx requirement from >=0.28 to >=0.28.1 (#39)

Updates the requirements on [httpx](https://github.com/encode/httpx) to permit the latest version.
- [Release notes](https://github.com/encode/httpx/releases)
- [Changelog](https://github.com/encode/httpx/blob/master/CHANGELOG.md)
- [Commits](encode/httpx@0.28.0...0.28.1)

---
updated-dependencies:
- dependency-name: httpx
  dependency-version: 0.28.1
  dependency-type: direct:production
...

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Author: dependabot[bot]

requirements-worker.txt

@@ -3,5 +3,5 @@ uvicorn>=0.46.0
 uvloop>=0.22.1
 httptools>=0.6
 docker>=7.1.0
-httpx>=0.28
+httpx>=0.28.1
 pyyaml>=6.0.3

requirements.txt

@@ -5,7 +5,7 @@ httptools>=0.6
 jinja2>=3.1.6
 pyyaml>=6.0.3
 aiosqlite>=0.22.1
-httpx>=0.28
+httpx>=0.28.1
 apscheduler>=3.11.2
 python-multipart>=0.0.27
 cryptography>=47.0.0