ci: pre-commit autoupdate

updates:
- [github.com/asottile/pyupgrade: v3.10.1 → v3.14.0](asottile/pyupgrade@v3.10.1...v3.14.0)
- [github.com/adamchainz/django-upgrade: 1.14.0 → 1.15.0](adamchainz/django-upgrade@1.14.0...1.15.0)

.pre-commit-config.yaml

@@ -9,13 +9,13 @@ ci:
 
 repos:
   - repo: https://github.com/asottile/pyupgrade
-    rev: v3.10.1
+    rev: v3.14.0
     hooks:
       - id: pyupgrade
         args: ["--py36-plus"]
 
   - repo: https://github.com/adamchainz/django-upgrade
-    rev: '1.14.0'
+    rev: '1.15.0'
     hooks:
       - id: django-upgrade
         args: [--target-version, "2.2"]