[test] Skip test for gc stress and turbofan.

BUG=v8:4754
LOG=n
NOTRY=true
TBR=mstarzinger@chromium.org

Review URL: https://codereview.chromium.org/1693823002

Cr-Commit-Position: refs/heads/master@{#33944}

test/mjsunit/mjsunit.status

@@ -373,6 +373,9 @@
 
   # BUG(v8:3097)
   'debug-references': [SKIP],
+
+  # BUG(v8:4754).
+  'debug-referenced-by': [PASS, NO_VARIANTS],
 }],  # 'gc_stress == True'
 
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