cad/svlint: Update 0.9.3 => 0.9.4

Changelogs:

• https://github.com/dalance/svlint/blob/master/CHANGELOG.md#v094---2025-09-11
• https://github.com/dalance/svlint/compare/v0.9.3...v0.9.4

• Separate CARGO_CRATES to Makefile.crates

Approved by: yuri@ (Mentor)

Differential Revision: https://reviews.freebsd.org/D52673