CLEANSTART-2026-AY55625 Security fixes in rancher-agent 2.13.7-r2

Package rancher-agent version 2.13.7-r2 fixes 7 vulnerabilities: CVE-2026-50163, CVE-2026-48978, CVE-2026-50151, CVE-2026-50162, ghsa-vh4v-2xq2-g5cg...