Avoid utcnow()

This raises a deprecation warning.

Author: alukach

src/asgi_s3_response_middleware/utils.py

@@ -3,4 +3,5 @@
 
 
 def generate_s3_key() -> str:
-    return datetime.datetime.now().isoformat() + "-" + str(uuid.uuid4())
+    now = datetime.datetime.now(datetime.UTC)
+    return now.isoformat() + "-" + str(uuid.uuid4())