[tools] Mark raytrace as slow for stress_incremental_marking variant

Bug: v8:11222
Change-Id: I18a5c58315e37443de1a328ff4d254116c67fcfd
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2569772Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#71590}

test/benchmarks/benchmarks.status

@@ -80,6 +80,9 @@
   # Too slow for stress_incremental_marking.
   'octane/box2d': [SKIP],
   'octane/typescript': [SKIP],
+
+  # https://crbug.com/v8/11222
+  'octane/raytrace': [PASS, SLOW],
 }],
 
 ['gc_fuzzer', {