chore(deps): Bump fastapi in the web-frameworks group

Bumps the web-frameworks group with 1 update: [fastapi](https://github.com/fastapi/fastapi).


Updates `fastapi` from 0.115.6 to 0.127.0
- [Release notes](https://github.com/fastapi/fastapi/releases)
- [Commits](fastapi/fastapi@0.115.6...0.127.0)

---
updated-dependencies:
- dependency-name: fastapi
  dependency-version: 0.127.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: web-frameworks
...

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

Author: dependabot[bot]

backend/requirements.txt

@@ -1,7 +1,7 @@
 # Backend requirements for Empathy Framework API
 
 # FastAPI and web server
-fastapi==0.115.6
+fastapi==0.127.0
 uvicorn[standard]==0.34.0
 python-multipart==0.0.20