[Sheriff] Disable graphics.TraceReplay.glxgears_stable

It has been failing consistently on CrOS bots.
This disables it.

Bug: 1123872
Change-Id: I79152a991118af02a215e3f809c50f42c12d24cd
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2387101
Commit-Queue: Maksim Ivanov <emaxx@chromium.org>
Reviewed-by: Maksim Ivanov <emaxx@chromium.org>
Cr-Commit-Position: refs/heads/master@{#803459}

chromeos/BUILD.gn

@@ -288,6 +288,9 @@ if (is_chromeos_device) {
   tast_test("chrome_all_tast_tests") {
     # To disable a specific test, add it the following list and cite a bug.
     tast_disabled_tests = [
+      # crbug.com/1123872
+      "graphics.TraceReplay.glxgears_stable",
+
       # crbug.com/1123300
       "crostini.Basic.artifact",
       "crostini.PackageInfo.artifact",