build(deps): bump fastapi from 0.140.7 to 0.141.1 in /backend

Bumps [fastapi](https://github.com/fastapi/fastapi) from 0.140.7 to 0.141.1.
- [Release notes](https://github.com/fastapi/fastapi/releases)
- [Commits](fastapi/fastapi@0.140.7...0.141.1)

---
updated-dependencies:
- dependency-name: fastapi
  dependency-version: 0.141.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

backend/pyproject.toml

@@ -5,7 +5,7 @@ description = "Sentinel Command Center Backend - FastAPI with Clerk Auth"
 readme = "README.md"
 requires-python = ">=3.12"
 dependencies = [
-    "fastapi>=0.140.7",
+    "fastapi>=0.141.1",
     "uvicorn>=0.51.0",
     "sqlalchemy>=2.0.51",
     "pydantic>=2.13.4",