Update pre-commit from 0.13.1 to 0.13.2

Author: pyup-bot

requirements-dev.txt

@@ -6,7 +6,7 @@ mccabe==0.6.1
 pydocstyle==1.1.1
 pep8==1.7.0
 pep8-naming==0.4.1
-pre-commit==0.13.1
+pre-commit==0.13.2
 py==1.4.32
 pytest==3.0.6
 pytest-django==3.1.2