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

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https://hg.mozilla.org/integration/gaia-central/rev/fbaec0070f91
Author: Bob Silverberg <bob.silverberg@gmail.com>
Desc: Merge pull request #13809 from qba73/keyboard

Adding url keyboard test

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https://hg.mozilla.org/integration/gaia-central/rev/ceed3ab95a77
Author: Jakub Jarosz <jakub.s.jarosz@gmail.com>
Desc: Adding url keyboard test