Bump fastapi from 0.116.1 to 0.120.4

Bumps [fastapi](https://github.com/fastapi/fastapi) from 0.116.1 to 0.120.4.
- [Release notes](https://github.com/fastapi/fastapi/releases)
- [Commits](fastapi/fastapi@0.116.1...0.120.4)

---
updated-dependencies:
- dependency-name: fastapi
  dependency-version: 0.120.4
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pyproject.toml

@@ -57,7 +57,7 @@ dev = [
   "pytest-cov==6.2.1",
   "hypothesis==6.140.2",
   "pytest-mock==3.15.1",
-  "fastapi==0.116.1",
+  "fastapi==0.120.4",
   "httpx==0.28.1",
   "kaleido==1.1.0",
   "pytest-random-order==1.2.0",