fixup! feat: add post commit bundle API in WireAPI

Author: typfel

WireAPI/Sources/WireAPI/APIs/MLSAPI/MLSAPIV5.swift

@@ -89,7 +89,7 @@ private struct BackendMLSPublicKeysResponseV5: Decodable, ToAPIModelConvertible
 
 private struct CommitBundleResponseV5: Decodable, ToAPIModelConvertible {
 
-    let time: UTCTimeMillis?
+    let time: UTCTime?
     let events: [UpdateEventDecodingProxy]
 
     func toAPIModel() -> [UpdateEvent] {