[pre-commit.ci] pre-commit autoupdate (#640)

updates:
- [github.com/asottile/pyupgrade: v2.25.0 → v2.26.0](asottile/pyupgrade@v2.25.0...v2.26.0)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -29,7 +29,7 @@ repos:
     additional_dependencies: [pyyaml]
 
 - repo: https://github.com/asottile/pyupgrade
-  rev: v2.25.0
+  rev: v2.26.0
   hooks:
   - id: pyupgrade
     args: [--py36-plus]