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/08db202c5dc4
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #12726 from teodosia/bug-924420

Bug 924420 -  Fix failing settings/test_settings_change_keyboard_language.py on aurora

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https://hg.mozilla.org/integration/gaia-1_2/rev/1ca483688f37
Author: Teodosia Pop <teodosia.pop@gmail.com>
Desc: Bug 924420 - Fixed failing settings/test_settings_change_keyboard_language.py