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

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https://hg.mozilla.org/integration/gaia-central/rev/e98efe63bc8b
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #11763 from davidflanagan/bug908938

Bug 908938: add Slovak auto-correct dictionary r=rudylu

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https://hg.mozilla.org/integration/gaia-central/rev/7126d60dce1b
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Bug 908938: add Slovak auto-correct dictionary