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

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https://hg.mozilla.org/integration/gaia-central/rev/67ed88a68635
Author: Ricky Chien <ricky060709@gmail.com>
Desc: Merge pull request #26843 from RickyChien/bug-1111352

Bug 1111352 - Add keyboard test for build script r=@cctuan

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https://hg.mozilla.org/integration/gaia-central/rev/ba9d6a0b48ab
Author: Ricky Chien <ricky060709@gmail.com>
Desc: Bug 1111352 - Add keyboard test for build script
Bumping manifests a=b2g-bump