Bump flake8-quotes from 3.2.0 to 3.3.1

Bumps [flake8-quotes](https://github.com/zheller/flake8-quotes) from 3.2.0 to 3.3.1.
- [Release notes](https://github.com/zheller/flake8-quotes/releases)
- [Commits](zheller/flake8-quotes@3.2.0...3.3.1)

---
updated-dependencies:
- dependency-name: flake8-quotes
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements-lint.txt

@@ -3,7 +3,7 @@ flake8==3.8.4
 flake8-bugbear==20.11.1
 flake8-docstrings==1.6.0
 flake8-import-order==0.18.1
-flake8-quotes==3.2.0
+flake8-quotes==3.3.1
 isort==5.8.0
 pylint==2.7.0
 pydocstyle==6.0.0