chore: Update OpenAPI specs (#172)

Author: bdbyrne

fern/apis/beta/changelog/2025-03-25.md

@@ -0,0 +1,32 @@
+
+# API Changelog
+
+## New Endpoints
+
+### Chats
+- Added base `chat` object and subtype `dm` (direct message) and related endpoints.
+  - [`POST /chats.create`](/beta/api-reference/chats/create) for creating a new chat.
+  - [`GET /chats.get`](/beta/api-reference/chats/get) and [`POST /chats.get`](/beta/api-reference/chats/get-post) for fetching a chat by ID.
+
+### Snap-kits
+- Added [`GET /snap-kit-action.execute.deferred`](/beta/api-reference/snap-kit-execution/snap-kit-action-execute-deferred) for executing a deferred snap-kit action.
+
+### Surveys
+- Added [`GET /surveys.responses.list`](/beta/api-reference/surveys/responses-list) and [`POST /surveys.responses.list`](/beta/api-reference/surveys/responses-list-post) for listing survey responses.
+
+## Modified Endpoints
+
+### Various
+- Added property `sync_metadata` to various objects for reporting sync status
+  - `article`
+  - `chat`
+  - `conversation`
+  - `custom_object`
+  - `directory`
+  - `group`
+  - `incident`
+  - `operation`
+  - `part`
+  - `role`
+  - `timeline_entry`
+  - `work`