Update changelogs from fern repo (#4418)

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

Author: fern-support

fern/products/sdks/overview/csharp/changelog/2026-03-20.mdx

@@ -1,3 +1,10 @@
+## 2.41.0
+**`(feat):`** Add `ConnectTimeout` property to `WebSocketConnection` and `WebSocketClient` with a
+default of 5 seconds. The connection factory call in `StartClient` now uses a linked
+`CancellationTokenSource` with `CancelAfter(ConnectTimeout)`, preventing indefinite
+hangs when the server is unresponsive.
+
+
 ## 2.40.0
 **`(feat):`** Configure PING/PONG keep-alive on `ClientWebSocket`. The default connection factory
 now sets `KeepAliveInterval` (default: 30 s) and, on .NET 9+, `KeepAliveTimeout`