build(deps): update uvicorn[standard] requirement in /requirements

Updates the requirements on [uvicorn[standard]](https://github.com/encode/uvicorn) to permit the latest version.
- [Release notes](https://github.com/encode/uvicorn/releases)
- [Changelog](https://github.com/encode/uvicorn/blob/master/CHANGELOG.md)
- [Commits](encode/uvicorn@0.12.0...0.23.0)

---
updated-dependencies:
- dependency-name: uvicorn[standard]
  dependency-type: direct:production
...

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

requirements/serve.txt

@@ -8,7 +8,7 @@ tqdm >4.60, <=4.65.0
 fastapi >0.65, <=0.98.0
 pydantic >1.8.1, <=2.0
 starlette <=0.28.0
-uvicorn[standard] >=0.12.0, <=0.20.0
+uvicorn[standard] >=0.12.0, <=0.23.0
 aiofiles >22.1.0, <=23.1.0
 jinja2 >=3.0.0, <3.2.0
 torchvision >0.10.0, <=0.15.2