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

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https://hg.mozilla.org/integration/gaia-central/rev/07a6bbd394f7
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #13896 from davidflanagan/demokbdim

demo keyboard app: implement autocorrect, etc.

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https://hg.mozilla.org/integration/gaia-central/rev/a97b15216b56
Author: David Flanagan <dflanagan@mozilla.com>
Desc: demo keyboard app: implement autocorrect, etc.

autocorrect and word suggestions

make backspace key autorepeat and implement caps lock