Update workers.yaml (#21366)

Author: ketanhwr

src/content/release-notes/workers.yaml

@@ -5,6 +5,9 @@ productLink: "/workers/"
 productArea: Developer platform
 productAreaLink: /workers/platform/changelog/platform/
 entries:
+  - publish_date: "2025-04-03"
+    description: |-
+      - Websocket client exceptions are now JS exceptions rather than internal errors.
   - publish_date: "2025-03-27"
     description: |-
       - Updated v8 to version 13.5.