Bump isort from 8.0.1 to 9.0.1 in /.github/workflows/requirements (#1496)

Bumps [isort](https://github.com/PyCQA/isort) from 8.0.1 to 9.0.1.
- [Release notes](https://github.com/PyCQA/isort/releases)
- [Changelog](https://github.com/PyCQA/isort/blob/main/CHANGELOG.md)
- [Commits](PyCQA/isort@8.0.1...9.0.1)

---
updated-dependencies:
- dependency-name: isort
  dependency-version: 9.0.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/requirements/style.txt

@@ -1,6 +1,6 @@
 black==26.5.1
 flake8==7.3.0
-isort[colors]==8.0.1
+isort[colors]==9.0.1
 codespell==2.4.2
 yamlfix==1.19.1
 click==8.4.2