Bump isort from 5.12.0 to 5.13.2 in /dummy-server (#88)

Bumps [isort](https://github.com/pycqa/isort) from 5.12.0 to 5.13.2.
- [Release notes](https://github.com/pycqa/isort/releases)
- [Changelog](https://github.com/PyCQA/isort/blob/main/CHANGELOG.md)
- [Commits](PyCQA/isort@5.12.0...5.13.2)

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

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

Author: dependabot[bot]

dummy-server/poetry.lock

@@ -17,7 +17,7 @@ pyhocon = "^0.3.61"
 mypy = "^1.11.0"
 black = "^24.8.0"
 flake8 = "^7.1.1"
-isort = "^5.12.0"
+isort = "^5.13.2"
 ddt = "^1.6.0"
 pytest = "^8.3.2"