Bump flake8 from 3.8.4 to 3.9.0 (#3)

* Bump flake8 from 3.8.4 to 3.9.0

Bumps [flake8](https://gitlab.com/pycqa/flake8) from 3.8.4 to 3.9.0.
- [Release notes](https://gitlab.com/pycqa/flake8/tags)
- [Commits](https://gitlab.com/pycqa/flake8/compare/3.8.4...3.9.0)

Signed-off-by: dependabot[bot] <[email protected]>

* Update pre-commit flake8 version

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

Author: dependabot[bot]

.pre-commit-config.yaml

@@ -6,7 +6,7 @@ repos:
         args: [--py38-plus]
         exclude: &fixtures ^tests/fixtures/.+\.py$
   - repo: https://gitlab.com/pycqa/flake8
-    rev: 3.8.4
+    rev: 3.9.0
     hooks:
       - id: flake8
         files: ^(python_typing_update|script|tests)/.+\.py$

requirements_test_pre_commit.txt

@@ -1,3 +1,3 @@
-flake8==3.8.4
+flake8==3.9.0
 isort==5.7.0
 pyupgrade==2.10.0