Merge pull request #49 from jupyter-server/pre-commit-ci-update-config

[pre-commit.ci] pre-commit autoupdate

Author: davidbrochart

.pre-commit-config.yaml

@@ -29,7 +29,7 @@ repos:
         args: [--profile=black]
 
   - repo: https://github.com/asottile/pyupgrade
-    rev: v2.37.3
+    rev: v2.38.0
     hooks:
       - id: pyupgrade
         args: [--py37-plus]