Bump isort from 5.9.0 to 5.9.1 (#5824)

Bumps [isort](https://github.com/pycqa/isort) from 5.9.0 to 5.9.1.
- [Release notes](https://github.com/pycqa/isort/releases)
- [Changelog](https://github.com/PyCQA/isort/blob/main/CHANGELOG.md)
- [Commits](PyCQA/isort@5.9.0...5.9.1)

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

Signed-off-by: dependabot[bot] <support@github.com>

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

requirements/dev.txt

@@ -114,7 +114,7 @@ iniconfig==1.1.1
     # via
     #   -r requirements/lint.txt
     #   pytest
-isort==5.9.0
+isort==5.9.1
     # via -r requirements/lint.txt
 jinja2==2.11.3
     # via

requirements/lint.in

@@ -1,7 +1,7 @@
 black==21.6b0; implementation_name=="cpython"
 flake8==3.9.2
 flake8-pyi==20.10.0
-isort==5.9.0
+isort==5.9.1
 mypy==0.790; implementation_name=="cpython"
 pre-commit==2.13.0
 pytest==6.2.2

requirements/lint.txt

@@ -32,7 +32,7 @@ identify==1.5.14
     # via pre-commit
 iniconfig==1.1.1
     # via pytest
-isort==5.9.0
+isort==5.9.1
     # via -r requirements/lint.in
 mccabe==0.6.1
     # via flake8