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

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https://hg.mozilla.org/integration/gaia-central/rev/4d1b68747220
Author: Mihai Cîrlănaru <mihai@cirlanaru.com>
Desc: Merge pull request #10705 from mcirlanaru/bug_888110

Bug 888110 - [Keyboard] Show '$' as alternative when long pressing ... r=@RudyLu

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https://hg.mozilla.org/integration/gaia-central/rev/c43bdfcab806
Author: Mihai Cirlanaru <mihai@cirlanaru.com>
Desc: Bug 888110 - [Keyboard] Show '$' as alternative when long pressing the 'S' key. r=rudyl