Update changelogs from fern repo (#4309)

Author: fern-support

fern/products/sdks/overview/typescript/changelog/2026-03-16.mdx

@@ -1,3 +1,11 @@
+## 3.57.1
+**`(fix):`** Fix passthrough `fetch()` method producing 404s when the SDK environment is an
+object (e.g. `{ base: string; production: string }`) instead of a plain string URL.
+The generated code now resolves the environment supplier inline and projects object
+environments to their `.base` property, instead of passing the raw object to
+`makePassthroughRequest` where it would be stringified as `[object Object]`.
+
+
 ## 3.57.0
 **`(feat):`** Expose an optional `protocols` field on `RealtimeClient.ConnectArgs` for WebSocket
 subprotocol negotiation. The `ReconnectingWebSocket` constructor already accepted a