ref: upgrade isort to work around poetry breakage (#620)

python-poetry/poetry-core#542

Committed via https://github.com/asottile/all-repos

Author: btbrand

.pre-commit-config.yaml

@@ -15,7 +15,7 @@ repos:
     - id: debug-statements
     - id: requirements-txt-fixer
   - repo: https://github.com/pycqa/isort
-    rev: 5.11.4
+    rev: 5.12.0
     hooks:
       - id: isort
         name: isort (python)