Update changelogs from fern repo (#5636)

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

Author: fern-support

fern/products/sdks/generators/python/changelog/2026-05-28.mdx

@@ -0,0 +1,12 @@
+## 5.14.4
+**`(fix):`** Fix SSE union discrimination for both data-level and protocol-level contexts.
+
+Data-level: Simplify `parse_sse_obj` to always parse the SSE `data` field as
+JSON instead of using runtime heuristics. This fixes incorrect routing when the
+discriminant field name (e.g., `event`) collides with an SSE envelope field.
+
+Protocol-level: Generate an if/elif dispatch chain at code-generation time that
+routes on `_sse.event`, parsing each variant's data payload into its concrete
+type. No runtime heuristic — the generator decides the code path statically.
+
+