deps(python): bump ruff from 0.14.9 to 0.14.10 in /backend

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.14.9 to 0.14.10.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.14.9...0.14.10)

---
updated-dependencies:
- dependency-name: ruff
  dependency-version: 0.14.10
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

backend/pyproject.toml

@@ -146,7 +146,7 @@ dev = [
     "pytest-asyncio==1.3.0",
     "pytest-cov==5.0.0",
     "pytest-xdist==3.6.1",
-    "ruff==0.14.9",
+    "ruff==0.14.10",
     "types-cachetools==6.2.0.20250827",
     "types-confluent-kafka==1.3.6",
 ]