devel/simdjson: update to 4.0.3

Changelog: https://github.com/simdjson/simdjson/releases/tag/v4.0.0
Changelog: https://github.com/simdjson/simdjson/releases/tag/v4.0.1
Changelog: https://github.com/simdjson/simdjson/releases/tag/v4.0.2
Changelog: https://github.com/simdjson/simdjson/releases/tag/v4.0.3