[wasm][test] Disable flaky test

Bug: v8:12605
Change-Id: Ic353570757b0271279d9a00352017b0341281e05
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3448382Reviewed-by: Andreas Haas <ahaas@chromium.org>
Commit-Queue: Manos Koukoutos <manoskouk@chromium.org>
Cr-Commit-Position: refs/heads/main@{#79008}

test/mjsunit/mjsunit.status

@@ -1190,6 +1190,9 @@
   # BUG(v8:11858): Deadlocks in predictable mode when waiting for the native
   # module cache entry to be completed.
   'regress/wasm/regress-709684': [SKIP],
+
+  # BUG(v8:12605): flaky test.
+  'wasm/grow-shared-memory': [SKIP],
 }],  # 'predictable == True'
 
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