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

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https://hg.mozilla.org/integration/gaia-central/rev/0e1c92ed245c
Author: Julien Wajsberg <felash@gmail.com>
Desc: Merge pull request #15102 from julienw/957551-fix-jshint

Bug 957551 - [Messages] Fix last jshint issue r=rwaldron

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https://hg.mozilla.org/integration/gaia-central/rev/c4ac7c4bb613
Author: Julien Wajsberg <felash@gmail.com>
Desc: Bug 957551 - [Messages] Fix last jshint issue r=rwaldron