Update changelogs from fern repo (#5308)

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

Author: fern-support

fern/products/cli-api-reference/cli-changelog/2026-05-01.mdx

@@ -1,3 +1,7 @@
+## 5.7.2
+**`(fix):`** Allow BCP 47 locale tags (e.g. `ja-JP`, `pt-BR`, `zh-Hans-CN`) in the `translations` and `languages` fields of `docs.yml`. Previously these were rejected by the JSON-schema validator with `must be one of [en, es, fr, ...]`.
+
+
 ## 5.7.1
 **`(fix):`** Preserve OpenAPI `default` values for array schemas across query parameters,
 headers, request bodies, and response body properties so docs can render

fern/products/sdks/generators/typescript/changelog/2026-05-01.mdx

@@ -1,3 +1,11 @@
+## 3.69.0
+**`(feat):`** Add `auth` option to `BaseClientOptions` for custom auth handling. Accepts an
+undiscriminated union of a function returning auth headers, an `AuthProvider`
+implementation, or the existing auth credential options. This allows users with
+`alwaysSendAuth: true` to handle auth via custom fetchers without the built-in
+auth provider throwing on missing credentials.
+
+
 ## 3.68.1
 **`(fix):`** Fix serialization schema for map types with nullable values. Previously, the
 schema generator stripped nullable wrappers from map value types, causing a