Update changelogs from fern repo (#4410)

Co-authored-by: Swimburger <3382717+Swimburger@users.noreply.github.com>

Author: fern-support

fern/products/sdks/overview/csharp/changelog/2026-03-19.mdx

@@ -1,3 +1,10 @@
+## 2.37.2
+**`(fix):`** Fix WebSocket binary messages being sent with `WebSocketMessageType.Text` instead of
+`WebSocketMessageType.Binary`. `RequestBinaryMessage` and `RequestBinarySegmentMessage`
+now correctly use `WebSocketMessageType.Binary` when calling `SendAsync`, ensuring
+audio data (e.g. webm/opus chunks) is sent as binary frames.
+
+
 ## 2.37.1
 **`(fix):`** Add `ReadAsPropertyName` and `WriteAsPropertyName` overrides to all remaining
 custom `JsonConverter` types: `EnumSerializer<TEnum>` (native C# enums),