[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/asottile/pyupgrade: v2.16.0 → v2.18.2](asottile/pyupgrade@v2.16.0...v2.18.2)

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -35,7 +35,7 @@ repos:
     -   id: add-trailing-comma
         args: [--py36-plus]
 -   repo: https://github.com/asottile/pyupgrade
-    rev: v2.16.0
+    rev: v2.18.2
     hooks:
     -   id: pyupgrade
         args: [--py36-plus]