[MEDIUM] Kirby vulnerable to path traversal of snippet names in the `snippet()` helper

PKSA-s88c-j7zs-83qs CVE-2025-30159 GHSA-fw82-87p8-v6hp

Affected version: >=4.0.0,<4.7.1|>=3.10.0,<3.10.1.2|<3.9.8.3

Reported by:
GitHub