chore(deps-dev): bump ruff from 0.4.6 to 0.4.7 in /backend (#238)

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.4.6 to 0.4.7.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@v0.4.6...v0.4.7)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

backend/pyproject.toml

@@ -48,7 +48,7 @@ openpyxl = "3.0.10" # TODO: dependency of `pyexcel-xlsx` Remove as soon as https
 psycopg = {extras = ["binary"], version = "^3.1.19"}
 
 [tool.poetry.group.dev.dependencies]
-ruff = "^0.4.6"
+ruff = "^0.4.7"
 coverage = "7.5.3"
 django-extensions = "3.2.3"
 factory-boy = "3.3.0"