MGASA-2026-0242 Updated firefox, firefox-l10n, rootcerts, nss packages fix security vulnerabilities

The updated packages fix security vulnerabilities: Privilege escalation in the Graphics: WebRender component. CVE-2026-12289 Memory safety bug fixed in Firefox ESR 140.12. CVE-2026-12290 Use-after-free in the Networking: HTTP component. CVE-2026-12291 Incorrect boundary conditions in the Web Audi...