Merge pull request #828 from twisted/pre-commit-ci-update-config

[pre-commit.ci] pre-commit autoupdate

Author: glyph

.pre-commit-config.yaml

@@ -5,7 +5,7 @@ ci:
 repos:
 
   - repo: https://github.com/asottile/pyupgrade
-    rev: "v3.19.1"
+    rev: "v3.20.0"
     hooks:
       - id: pyupgrade
         args: ["--py37-plus", "--keep-runtime-typing"]