Fuzzer: Ignore testcases that V8 OOMs on (#5733)

We already ignore OOMs in the interpreter. This adds the syntax for V8, which
I saw an error on now (on an array.new of a massive size).

Author: kripken

scripts/fuzz_opt.py

@@ -616,6 +616,9 @@ def filter_known_issues(output):
             # note that this text is a little too broad, but the problem is rare
             # enough that it's unlikely to hide an unrelated issue
             'found br_if of type',
+            # this text is emitted from V8 when it runs out of memory during a
+            # GC allocation.
+            'out of memory',
             # all host limitations are arbitrary and may differ between VMs and
             # also be affected by optimizations, so ignore them.
             # this is the prefix that the binaryen interpreter emits. For V8,