Avoid pre-commit isort crash

See PyCQA/isort#2077.

Author: gschaffner

.pre-commit-config.yaml

@@ -25,7 +25,7 @@ repos:
       - id: pyupgrade
         files: "^(tests/demo_pkg_inline/build.py)$"
   - repo: https://github.com/PyCQA/isort
-    rev: 5.11.4
+    rev: 5.12.0
     hooks:
       - id: isort
   - repo: https://github.com/psf/black