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

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https://hg.mozilla.org/integration/gaia-central/rev/e2429ca17a0b
Author: Fernando Campo <fernando.campo@o2.com>
Desc: Merge pull request #12703 from EdgarChen/bug_922703

Bug 922703 - [Gaia] Refine the error handler for card lock functionality (r=fcampo)

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https://hg.mozilla.org/integration/gaia-central/rev/9af8acbf51ce
Author: Edgar Chen <echen@mozilla.com>
Desc: Bug 922703 - Refine the error handler for card lock functionality