Skip regress-crbug-137689.js when running with GC stress

It depends on maps not disappearing prematurely.

R=verwaest@chromium.org

Review URL: https://codereview.chromium.org/720853002

Cr-Commit-Position: refs/heads/master@{#25302}
git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@25302 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/mjsunit/mjsunit.status

@@ -227,6 +227,7 @@
   'harmony/block-let-crankshaft': [SKIP],
   'opt-elements-kind': [SKIP],
   'osr-elements-kind': [SKIP],
+  'regress/regress-crbug-137689': [SKIP],
   'regress/regress-165637': [SKIP],
   'regress/regress-2249': [SKIP],
   # Tests taking too long