Update changelogs from fern repo (#2371)

Co-authored-by: Swimburger <[email protected]>

Author: fern-support

fern/products/cli-api-reference/cli-changelog/2025-11-27.mdx

@@ -1,3 +1,9 @@
+## 2.13.0
+**`(feat):`** Allow all API settings to be overridden at the generator level in generators.yml.
+
+**`(feat):`** Add CLI migration to automatically convert deprecated generator-level API settings keys to their new equivalents: `use-title` to `title-as-schema-name`, and `unions: v1` to `prefer-undiscriminated-unions-with-literals: true`.
+
+
 ## 2.12.0
 **`(feat):`** Support per-generator auth-schemes override in generators.yml. Generators can now define their own `auth-schemes` at the generator level, which takes precedence over top-level definitions.