[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/adamchainz/django-upgrade: 1.27.0 → 1.28.0](adamchainz/django-upgrade@1.27.0...1.28.0)

Author: pre-commit-ci[bot]

.pre-commit-config.yaml

@@ -52,7 +52,7 @@ repos:
   - id: pyupgrade
     args: ['--keep-mock']
 - repo: https://github.com/adamchainz/django-upgrade
-  rev: '1.27.0'
+  rev: '1.28.0'
   hooks:
   - id: django-upgrade
     args: [--target-version, '4.2']