Release Notes for v12.0.8

Fixes

Fixed webFrame spell checker APIs crashing when called in sandboxed renderer. #29086 (Also in 13)
Fixed an issue where illegal access error could be thrown when nodeIntegrationInSubFrames is enabled. #29169 (Also in 13)
Fixed an issue where extensions without a background page might not have file access. #29172 (Also in 13)
Fixed an issue where the void function Menu.setApplicationMenu would return a value on some platforms. #29128 (Also in 13)
Fixed corner radius for vibrancy view in macOS 11. #29071 (Also in 11, 13)