v2026.4.3: Fix seccomp build on armv7

A small patch release that fixes a compile error preventing mise from building on 32-bit ARM (armv7) targets.

Fixed

• seccomp network filter build on armv7 -- The seccomp sandbox code that restricts network access during mise exec failed to compile on armv7 targets. The libc::SYS_socket and libc::SYS_socketpair constants are i32 on 32-bit platforms but the rule map expects i64 keys, causing a type mismatch. An explicit as i64 cast fixes the build while remaining a no-op on 64-bit platforms. #8869 by @jdx

Full Changelog: v2026.4.2...v2026.4.3