cad/veryl: Update 0.16.3 => 0.16.4

Changelogs:
* https://github.com/veryl-lang/veryl/releases/tag/v0.16.4
* https://github.com/veryl-lang/veryl/compare/v0.16.3...v0.16.4

* Switch: from rust-nightly to rust
  as needed edition2024 is already included since rust-1.85
* Pet: portclippy(1) and portfmt(1)

Approved by:	yuri@ (Mentor)

Differential Revision: https://reviews.freebsd.org/D52686