Merge pull request #96 from beeware/autoupdates/pre-commit/pyupgrade

Bump pyupgrade from v3.17.0 to v3.18.0

Author: freakboy3742

.pre-commit-config.yaml

@@ -15,7 +15,7 @@ repos:
       - id: isort
         additional_dependencies: [toml]
   - repo: https://github.com/asottile/pyupgrade
-    rev: v3.17.0
+    rev: v3.18.0
     hooks:
       - id: pyupgrade
         args: [--py38-plus]