Bump isort from 5.7.0 to 5.8.0 (#268)

Bumps [isort](https://github.com/pycqa/isort) from 5.7.0 to 5.8.0.
- [Release notes](https://github.com/pycqa/isort/releases)
- [Changelog](https://github.com/PyCQA/isort/blob/develop/CHANGELOG.md)
- [Commits](PyCQA/isort@5.7.0...5.8.0)

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

Author: dependabot[bot]

poetry.lock

@@ -36,7 +36,7 @@ blacken-docs = "^1.10.0"
 coverage = {version = "^5.5", extras = ["toml"]}
 flake8 = "^3.9.0"
 flake8-docstrings = "^1.6.0"
-isort = "^5.7.0"
+isort = "^5.8.0"
 mypy = "^0.812"
 pre-commit = "^2.11.1"
 pre-commit-hooks = "^3.4.0"