Security update for shadowsocks-v2ray-plugin

This update for shadowsocks-v2ray-plugin fixes the following issues: Changes in shadowsocks-v2ray-plugin: - Update version to 5.49.0 * Update v2ray-core to 5.49.0 * Update grpc to 1.81.1 (boo#1260328 and CVE-2026-33186) - Update version to 5.44.1 * Update v2ray-core to v5.44.1 - Update version to 5.41.0 * Update v2ray-core to v5.41.0 - Update version to 5.37.0 * Update v2ray-core to 5.37.0 - Drop update-vendor.patch, fixed by upstream