Bump flake8-plugin-utils from 1.3.0 to 1.3.1

Bumps [flake8-plugin-utils](https://github.com/afonasev/flake8-plugin-utils) from 1.3.0 to 1.3.1.
- [Release notes](https://github.com/afonasev/flake8-plugin-utils/releases)
- [Commits](afonasev/flake8-plugin-utils@v1.3.0...v1.3.1)

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

requirements-lint.txt

@@ -13,7 +13,7 @@ flake8-isort==3.0.1
 flake8-logging-format==0.6.0
 flake8-mutable==1.2.0
 flake8-no-u-prefixed-strings==0.2
-flake8-plugin-utils==1.3.0
+flake8-plugin-utils==1.3.1
 flake8-polyfill==1.0.2
 flake8-print==3.1.4
 flake8-return==1.1.2