Add pyupgrade to pre-commit-config (#385)

.pre-commit-config.yaml

@@ -12,3 +12,8 @@ repos:
     rev: 5.10.1
     hooks:
       - id: isort
+  - repo: https://github.com/asottile/pyupgrade
+    rev: v2.34.0
+    hooks:
+    -   id: pyupgrade
+        args: [--py37-plus]

auditlog_tests/tests.py

@@ -205,10 +205,10 @@ class WithActorMixin:
     sequence = itertools.count()
 
     def setUp(self):
-        username = "actor_{}".format(next(self.sequence))
+        username = f"actor_{next(self.sequence)}"
         self.user = get_user_model().objects.create(
             username=username,
-            email="{}@example.com".format(username),
+            email=f"{username}@example.com",
             password="secret",
         )
         super().setUp()