Bumping gaia.json for 2 gaia-1_2 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_2/rev/3e177cd022e1
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 935307 - [B2G][Contacts] A user is able to retrieve a contact information from Settings screen.

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https://hg.mozilla.org/integration/gaia-1_2/rev/87fb7295c038
Author: Rudy Lu <me@rudy.lu>
Desc: Merge pull request #13892 from RudyLu/keyboard/Bug941440_correct_Macedonian_layout

Bug 941440 - The layout of Macedonian keyboard is incorrect - the space
r=timdream (cherry picked from commit d04ccfacdaf820b888f613dcae9a40d7e2a88f7e)
a=timdream