Skip test-heap/OutOfMemorySmallObjects on native arm

The test is flaky on arm in --optimize-for-size.

NOTRY=true

Bug: v8:7605
Change-Id: I6219442545244bb0c07f8b028668f41602a83b30
Reviewed-on: https://chromium-review.googlesource.com/1032331
Commit-Queue: Jakob Gruber <jgruber@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#52827}

test/cctest/cctest.status

@@ -286,6 +286,9 @@
   'test-serialize/StartupSerializerTwice': [SKIP],
   'test-serialize/StartupSerializerOnceRunScript': [SKIP],
   'test-serialize/StartupSerializerTwiceRunScript': [SKIP],
+
+  # crbug.com/v8/7605
+  'test-heap/OutOfMemorySmallObjects': [PASS, ['not simulator_run', SKIP]],
 }],  # 'arch == arm'
 
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