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

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https://hg.mozilla.org/integration/gaia-central/rev/22676ea57975
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #20792 from crh0716/1022710

Bug 1022710 - Do not update the visibility of the items when the voice type is null r=eragon

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https://hg.mozilla.org/integration/gaia-central/rev/66a7b846016a
Author: Arthur Chen <crh0716@gmail.com>
Desc: Bug 1022710 - Do not update the visibility of the items when the voice type is null
Bumping manifests a=b2g-bump