Update flake8 requirement from ^3.7.9 to ^4.0.1

Updates the requirements on [flake8](https://github.com/pycqa/flake8) to permit the latest version.
- [Release notes](https://github.com/pycqa/flake8/releases)
- [Commits](https://github.com/pycqa/flake8/compare/3.7.9...4.0.1)

---
updated-dependencies:
- dependency-name: flake8
  dependency-type: direct:development
...

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

diff --git a/pyproject.toml b/pyproject.toml
index 64003450d3def6b7a5b3548942addcd55842f383..ae662ed8171791cc717d378aabb14a129c154d49 100644 (file)
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,7 +22,7 @@ sniffio = {version="^1.1", optional=true}
 mypy = "^0.910"
 pytest = ">=5.4.1,<7"
 pytest-cov = "^3.0.0"
-flake8 = "^3.7.9"
+flake8 = "^4.0.1"
 sphinx = "^4.0.0"
 coverage = "^6.0"
 twine = "^3.1.1"