Update pre-commit-hooks to 6.0.0 (#662)

Author: cdce8p

.pre-commit-config.yaml

@@ -22,7 +22,7 @@ repos:
       - id: isort
         exclude:  *fixtures
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v5.0.0
+    rev: v6.0.0
     hooks:
       - id: trailing-whitespace
         exclude: .+\.md