update changelogs

Author: tjb9dc

fern/products/sdks/overview/typescript/changelog/2025-09-19.mdx

@@ -1,3 +1,7 @@
+## 3.1.0
+**`(feat):`** `consolidateTypeFiles` consolidates all folders of type files into a single file.
+
+
 ## 3.0.2
 **`(fix):`** Update `exportAllRequestsAtRoot` to create an aggregate request file instead of adding imports.