Update changelog.mdx

Author: chkn

api-reference/v2/resources/changelog.mdx

@@ -3,6 +3,10 @@ title: Glide API Changelog
 sidebarTitle: Changelog
 ---
 
+### September 4, 2024
+
+- Removed "json" as a valid data type in column schemas for now.
+
 ### August 28, 2024
 
 - Users should now use the PUT method instead of POST for `/stashes/{stashID}/{serial}` to set the content of a chunk in a stash.