This update for chromium fixes the following issues:

- Chromium 146.0.7680.153 (boo#1259964):
* CVE-2026-4439: Out of bounds memory access in WebGL
* CVE-2026-4440: Out of bounds read and write in WebGL
* CVE-2026-4441: Use after free in Base
* CVE-2026-4442: Heap buffer overflow in CSS
* CVE-2026-4443: Heap buffer overflow in WebAudio
* CVE-2026-4444: Stack buffer overflow in WebRTC
* CVE-2026-4445: Use after free in WebRTC
* CVE-2026-4446: Use after free in WebRTC
* CVE-2026-4447: Inappropriate implementation in V8
* CVE-2026-4448: Heap buffer overflow in ANGLE
* CVE-2026-4449: Use after free in Blink
* CVE-2026-4450: Out of bounds write in V8
* CVE-2026-4451: Insufficient validation of untrusted input in Navigation
* CVE-2026-4452: Integer overflow in ANGLE
* CVE-2026-4453: Integer overflow in Dawn
* CVE-2026-4454: Use after free in Network
* CVE-2026-4455: Heap buffer overflow in PDFium
* CVE-2026-4456: Use after free in Digital Credentials API
* CVE-2026-4457: Type Confusion in V8
* CVE-2026-4458: Use after free in Extensions
* CVE-2026-4459: Out of bounds read and write in WebAudio
* CVE-2026-4460: Out of bounds read in Skia
* CVE-2026-4461: Inappropriate implementation in V8
* CVE-2026-4462: Out of bounds read in Blink
* CVE-2026-4463: Heap buffer overflow in WebRTC
* CVE-2026-4464: Integer overflow in ANGLE

- fix INSTALL.sh (upstream changed CHANNEL to channel in wrapper)