[pre-commit.ci] pre-commit autoupdate

updates:
- [github.com/asottile/pyupgrade: v3.16.0 → v3.17.0](asottile/pyupgrade@v3.16.0...v3.17.0)
- [github.com/adamchainz/django-upgrade: 1.19.0 → 1.20.0](adamchainz/django-upgrade@1.19.0...1.20.0)

.pre-commit-config.yaml

@@ -14,12 +14,12 @@ repos:
     hooks:
       - id: flake8
   - repo: https://github.com/asottile/pyupgrade
-    rev: v3.16.0
+    rev: v3.17.0
     hooks:
     -   id: pyupgrade
         args: [--py37-plus]
   - repo: https://github.com/adamchainz/django-upgrade
-    rev: 1.19.0
+    rev: 1.20.0
     hooks:
     - id: django-upgrade
       args: [--target-version, "3.2"]