grafana security update

10.2.6-27 - Resolves: RHEL-183694: CVE-2026-39821 10.2.6-26 - Resolves RHEL-161791: CVE-2026-27877 - Resolves RHEL-166459: CVE-2026-32282 - Resolves RHEL-167494: CVE-2026-32283...