Update uvicorn requirement from <1.0,>=0.32 to >=0.44.0,<1.0 in /backend

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@0.32.0...0.44.0)

---
updated-dependencies:
- dependency-name: uvicorn
  dependency-version: 0.44.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

backend/pyproject.toml

@@ -15,7 +15,7 @@ dependencies = [
   "opencv-python-headless>=4.10,<5.0",
   "pydantic-settings>=2.6,<3.0",
   "python-multipart>=0.0.12,<1.0",
-  "uvicorn[standard]>=0.32,<1.0",
+  "uvicorn[standard]>=0.44.0,<1.0",
 ]
 
 [project.optional-dependencies]