MGASA-2026-0345 Updated nspr, nss, & firefox packages fix security vulnerabilities

Site isolation issue in the Graphics: CanvasWebGL component. CVE-2026-74934 Privilege escalation in the DOM: Networking component. CVE-2026-74935 Use-after-free in the JavaScript: WebAssembly component. CVE-2026-74936 Use-after-free in the JavaScript: GC component. CVE-2026-74937 Mitigation bypas...