chore: bump chromium to 120.0.6099.276 (28-x-y) (#41195)

chore: bump chromium in DEPS to 120.0.6099.276

Co-authored-by: electron-roller[bot] <84116207+electron-roller[bot]@users.noreply.github.com>

DEPS

@@ -2,7 +2,7 @@ gclient_gn_args_from = 'src'
 
 vars = {
   'chromium_version':
-    '120.0.6099.268',
+    '120.0.6099.276',
   'node_version':
     'v18.18.2',
   'nan_version':