Updated rootcerts, nss & firefox packages fix security vulnerabilities

Use-after-free in the DOM: Core & HTML component. CVE-2026-6746 Use-after-free in the WebRTC component. CVE-2026-6747 Uninitialized memory in the Audio/Video: Web Codecs component. CVE-2026-6748 Information disclosure due to uninitialized memory in the Graphics: Canvas2D component. CVE-2026-6749...