olddeps fix

Author: reivilibre

synapse/rest/client/sync.py

@@ -23,7 +23,7 @@
 from collections import defaultdict
 from typing import TYPE_CHECKING, Any, Dict, List, Mapping, Optional, Tuple, Union
 
-import attrs
+import attr
 
 from synapse.api.constants import AccountDataTypes, EduTypes, Membership, PresenceState
 from synapse.api.errors import Codes, StoreError, SynapseError
@@ -1254,7 +1254,7 @@ async def encode_extensions(
         ):
             serialized_extensions["thread_subscriptions"] = {
                 "changes": [
-                    attrs.asdict(change, filter=lambda _attr, v: v is not None)
+                    attr.asdict(change, filter=lambda _attr, v: v is not None)
                     for change in extensions.thread_subscriptions.changed
                 ]
             }