Update changelogs from fern repo (#5124)

Co-authored-by: dsinghvi <10870189+dsinghvi@users.noreply.github.com>

Author: fern-support

fern/products/sdks/generators/go/changelog/2026-04-23.mdx

@@ -1,3 +1,12 @@
+## 1.37.0
+**`(feat):`** Add `clientDefault` support for headers, query parameters, and path
+parameters. When a parameter has a `clientDefault` value (set via the
+`x-fern-default` OpenAPI extension), the generated SDK uses that value
+as a fallback when the caller does not provide one. Parameters with
+`clientDefault` become optional in the client constructor and endpoint
+signatures.
+
+
 ## 1.36.0
 **`(feat):`** Support omitting username or password from basic auth when configured via
 `usernameOmit`/`passwordOmit` in the IR. When a field is omitted, it is