Bump flake8-bugbear from 20.1.4 to 20.11.1

Bumps [flake8-bugbear](https://github.com/PyCQA/flake8-bugbear) from 20.1.4 to 20.11.1.
- [Release notes](https://github.com/PyCQA/flake8-bugbear/releases)
- [Commits](PyCQA/flake8-bugbear@20.1.4...20.11.1)

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

Author: dependabot[bot]

poetry.lock

@@ -34,7 +34,7 @@ django = ">=2.0"
 black = "^20.8b1"
 flake8 = "^3.8.4"
 flake8-bandit = "^2.1.2"
-flake8-bugbear = "^20.1.4"
+flake8-bugbear = "^20.11.1"
 safety = "^1.8.5"
 pytest = "^6.1.2"
 mypy = "^0.790"