Update pre-commit hook asottile/pyupgrade to v2.38.4

Author: renovate[bot]

.pre-commit-config.yaml

@@ -26,7 +26,7 @@ repos:
       - id: prettier
         args: ["--tab-width", "2"]
   - repo: https://github.com/asottile/pyupgrade
-    rev: v2.31.1
+    rev: v2.38.4
     hooks:
       - id: pyupgrade
         args: [--py37-plus]