Merge pull request #272 from sass/all-repos_autofix_pre-commit-autoupdate

Ran pre-commit autoupdate.

Author: asottile

.pre-commit-config.yaml

@@ -1,6 +1,6 @@
 repos:
 -   repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v1.4.0
+    rev: v2.0.0
     hooks:
     -   id: trailing-whitespace
     -   id: end-of-file-fixer
@@ -9,10 +9,10 @@ repos:
     -   id: flake8
         exclude: ^docs/conf.py
 -   repo: https://github.com/asottile/pyupgrade
-    rev: v1.4.0
+    rev: v1.8.0
     hooks:
     -   id: pyupgrade
 -   repo: https://github.com/asottile/add-trailing-comma
-    rev: v0.6.4
+    rev: v0.7.1
     hooks:
     -   id: add-trailing-comma