Bump isort from 5.10.1 to 5.12.0 in /requirements (#1118)

Bumps [isort](https://github.com/pycqa/isort) from 5.10.1 to 5.12.0.
- [Release notes](https://github.com/pycqa/isort/releases)
- [Changelog](https://github.com/PyCQA/isort/blob/main/CHANGELOG.md)
- [Commits](PyCQA/isort@5.10.1...5.12.0)

---
updated-dependencies:
- dependency-name: isort
  dependency-type: direct:production
  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]

requirements/lint.txt

@@ -1,3 +1,3 @@
 black==23.1.0
 flake8==6.0.0
-isort==5.10.1
+isort==5.12.0