CLEANSTART-2026-SH90347 Security fixes in keycloak 26.6.1-r3

Package keycloak version 26.6.1-r3 fixes 8 vulnerabilities: ghsa-3qp7-7mw8-wx86, ghsa-x4gw-5cx5-pgmh, ghsa-5x3r-wrvg-rp6q, ghsa-c2gf-v879-257j, CVE-2026-47244...