deps: update simdutf to 5.2.3

PR-URL: #52381
Refs: #51670
Reviewed-By: Daniel Lemire <[email protected]>
Reviewed-By: Vinícius Lourenço Claro Cardoso <[email protected]>
Reviewed-By: Matteo Collina <[email protected]>
Reviewed-By: Robert Nagy <[email protected]>
Reviewed-By: Benjamin Gruenbaum <[email protected]>
Reviewed-By: Filip Skokan <[email protected]>

Author: anonrig