Update uvicorn requirement from >=0.39.0 to >=0.49.0

Updates the requirements on [uvicorn](https://github.com/Kludex/uvicorn) to permit the latest version.
- [Release notes](https://github.com/Kludex/uvicorn/releases)
- [Changelog](https://github.com/Kludex/uvicorn/blob/main/docs/release-notes.md)
- [Commits](Kludex/uvicorn@0.39.0...0.49.0)

---
updated-dependencies:
- dependency-name: uvicorn
  dependency-version: 0.49.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements-tests.txt

@@ -21,4 +21,4 @@ types-redis ==4.6.0.20241004
 # types
 types-ujson ==5.10.0.20250822
 ujson >= 4.0.1
-uvicorn[standard] >= 0.39.0
+uvicorn[standard] >= 0.49.0