Merge pull request #1473 from jupyter/pre-commit-ci-update-config

[pre-commit.ci] pre-commit autoupdate

Author: consideRatio

.pre-commit-config.yaml

@@ -5,7 +5,7 @@ ci:
 repos:
   # Autoupdate: Python code
   - repo: https://github.com/asottile/pyupgrade
-    rev: v2.26.0
+    rev: v2.28.0
     hooks:
       - id: pyupgrade
         args: [--py39-plus]