Update changelogs from fern repo (#5627)

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

Author: fern-support

fern/products/sdks/generators/typescript/changelog/2026-05-27.mdx

@@ -0,0 +1,6 @@
+## 3.71.3
+**`(fix):`** Retain a reference to the upstream `Response` on streaming and SSE response
+bodies so that undici's `FinalizationRegistry` does not garbage-collect the
+`Response` and cancel the body stream on Node 18+.
+
+