Bump isort from 5.13.1 to 5.13.2 (#360)

Bumps [isort](https://github.com/pycqa/isort) from 5.13.1 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@5.13.1...5.13.2)

---
updated-dependencies:
- dependency-name: isort
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

requirements/testing.txt

@@ -1,5 +1,5 @@
 -r production.txt
-isort==5.13.1
+isort==5.13.2
 coveralls==3.3.1
 flake8==6.1.0
 flake8-isort==6.1.1