Bump uvicorn[standard] from 0.30.5 to 0.31.1 in /core

Bumps [uvicorn[standard]](https://github.com/encode/uvicorn) from 0.30.5 to 0.31.1.
- [Release notes](https://github.com/encode/uvicorn/releases)
- [Changelog](https://github.com/encode/uvicorn/blob/master/CHANGELOG.md)
- [Commits](encode/uvicorn@0.30.5...0.31.1)

---
updated-dependencies:
- dependency-name: uvicorn[standard]
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

core/requirements.txt

@@ -6,4 +6,4 @@ passlib==1.7.4
 pydantic==2.8.2
 PyJWT==2.8.0
 scikit-learn==1.5.1
-uvicorn[standard]==0.30.5
+uvicorn[standard]==0.31.1