Bumping gaia.json for 1 gaia-1_2 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_2/rev/4b85ae9886d1
Author: Damjan Georgievski <gdamjan@gmail.com>
Desc: Adding Macedonian keyboard layout

backport of 86306ac2fc from master