chore: Update OpenAPI specs (#268)

Author: bdbyrne

fern/apis/beta/changelog/2025-06-24.md

@@ -0,0 +1,19 @@
+## New Endpoints
+
+### Vistas
+- [`/vistas.delete`](/beta/api-reference/vistas/delete): Deletes a vista
+- [`/vistas.get`](/beta/api-reference/vistas/get-post): Gets a vista's information
+- [`/vistas.list`](/beta/api-reference/vistas/list-post): Lists available vistas
+
+### Vista Group Items
+- [`/vistas.groups.delete`](/beta/api-reference/vistas/groups-delete): Deletes a vista group item
+- [`/vistas.groups.get`](/beta/api-reference/vistas/groups-get-post): Gets a vista group item's information
+- [`/vistas.groups.list`](/beta/api-reference/vistas/groups-list-post): Lists the available vista group items
+
+## Updated Endpoints
+
+### Webhooks
+- Added webhook types for articles:
+  - `article_created`
+  - `article_updated`
+  - `article_deleted`