⬆ Bump ruff from 0.6.2 to 0.8.4

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.6.2 to 0.8.4.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.6.2...0.8.4)

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

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

requirements-tests.txt

@@ -3,7 +3,7 @@
 pytest >=7.0.1,<8.0.0
 coverage[toml] >=6.2,<8.0
 mypy ==1.4.1
-ruff ==0.6.2
+ruff ==0.8.4
 # For FastAPI tests
 fastapi >=0.103.2
 httpx ==0.24.1