Bump isort from 6.0.1 to 6.1.0 in /requirements

Bumps [isort](https://github.com/PyCQA/isort) from 6.0.1 to 6.1.0.
- [Release notes](https://github.com/PyCQA/isort/releases)
- [Changelog](https://github.com/PyCQA/isort/blob/main/CHANGELOG.md)
- [Commits](PyCQA/isort@6.0.1...6.1.0)

---
updated-dependencies:
- dependency-name: isort
  dependency-version: 6.1.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements/lint.txt

@@ -1,3 +1,3 @@
 black==25.9.0
 flake8==7.3.0
-isort==6.0.1
+isort==6.1.0