Bump flake8-executable from 2.1.0 to 2.1.1 (#75)

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

Author: dependabot[bot]

requirements/lint.txt

@@ -4,7 +4,7 @@ bandit == 1.6.2
 flake8 == 3.8.4
 flake8-bugbear == 20.11.1
 flake8-comprehensions == 3.3.0
-flake8-executable == 2.1.0
+flake8-executable == 2.1.1
 mccabe == 0.6.1
 # Fix mypy to a previous version for now due to a regression: https://github.com/python/typeshed/issues/4681
 mypy == 0.782