security/clamav: update 1.5.1 -> 1.5.2
Reported by: Andrea Venturoli <ml@netfence.it>
Changes: https://blog.clamav.net/2026/03/clamav-152-and-144-security-patch.html
Security: CVE-2026-20031
MFH: 2026Q1
(cherry picked from commit bf21cd498276b8b0000b0a8d4857e35bd31f0315)