[tests] Update expected output of recently-merged gpos5
The merged PR was from before landing this:
commit 7a72b20aa2b604053696e731185a17286de73b08
Author: Garret Rieger <grieger@google.com>
Date: Thu Sep 24 15:58:48 2020 -0700
[subset] Subset GDEF during layout subsetting tests.
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