Bump isort from 5.13.2 to 6.0.0 (#128) #474

Job	Run time
Cross-arch tests with nox (arm64, ubuntu-20.04, 3.11, pytest_min)	3m 34s
Cross-arch tests with nox (arm64, ubuntu-20.04, 3.11, pytest_max)	3m 32s
Test documentation website generation	0s
Test with nox (ubuntu-20.04, 3.11, ci_checks_max)	45s
Build distribution packages	17s
Test with nox (ubuntu-20.04, 3.11, pytest_min)	37s
Test package installation in different architectures	1m 27s
Test with nox	0s
Cross-arch tests with nox	1s
Publish documentation website to GitHub pages	0s
Create GitHub release	0s
Publish packages to PyPI	0s
	10m 13s

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