update changelogs

Author: thesandlord

fern/products/sdks/generators/python/changelog/2026-07-28.mdx

@@ -1,3 +1,13 @@
+## 5.24.0
+**`(feat):`** Add an opt-in `optional-auth` config flag. When enabled, client auth
+parameters (bearer token, basic auth username/password, header auth) are
+made optional even when the API spec mandates auth on all endpoints
+(`isAuthMandatory=true`). Auth headers are only sent when credentials are
+provided. Useful for hand-maintained wrapper clients that authenticate via
+external means (e.g. cloud provider credentials). Defaults to `false`, so
+existing behavior is unchanged.
+
+
 ## 5.23.0
 **`(feat):`** Add an opt-in `runtime_version` config flag. When enabled, the SDK version
 reported in the telemetry headers (`X-Fern-SDK-Version` and the version segment

fern/products/sdks/generators/typescript/changelog/2026-07-28.mdx

@@ -0,0 +1,11 @@
+## 3.85.0
+**`(feat):`** Add an opt-in `optional-auth` config flag. When enabled, client auth
+parameters are made optional even when the API spec mandates auth on all
+endpoints (`isAuthMandatory=true`), so the client can be constructed without
+credentials. Requests are then sent unauthenticated when no credentials are
+supplied, instead of throwing from the auth provider. Useful for
+hand-maintained wrapper clients that authenticate via external means
+(e.g. cloud provider credentials). Defaults to `false`, so existing
+behavior is unchanged.
+
+