Update changelogs from fern repo (#4579)

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

Author: fern-support

fern/products/cli-api-reference/cli-changelog/2026-03-26.mdx

@@ -1,3 +1,12 @@
+## 4.46.4
+**`(fix):`** Fix OAuth client-credentials auth from generators.yml being converted to
+bearer token instead of proper OAuth in the new OpenAPI parser. The
+`convertApiAuth` in `ir-utils` had a TODO stub that fell back to bearer auth
+for OAuth schemes. A post-processing step in `OpenAPIConverter` now resolves
+OAuth endpoint references after paths are converted, constructing the full
+`AuthScheme.oauth` with resolved endpoint and property references.
+
+
 ## 4.46.3
 **`(fix):`** Fix OpenAPI-to-Fern conversion producing malformed discriminated union
 definitions when `x-fern-discriminator-context` is set. The context