[SecuritySolution] Fix broken delete timeline note request (#168739)

## Summary

Fixes #168738

The delete request for timeline notes was missing the `version` header.

x-pack/plugins/security_solution/public/timelines/components/open_timeline/note_previews/index.tsx

@@ -112,6 +112,7 @@ function useDeleteNote(noteId: string | null | undefined) {
       return http.fetch('/api/note', {
         method: 'DELETE',
         body: JSON.stringify({ noteId: id }),
+        version: '2023-10-31',
       });
     },
     onSuccess: () => {