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

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https://hg.mozilla.org/integration/gaia-central/rev/1f42c7be6077
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Merge pull request #25631 from millermedeiros/993988-ftu

Bug 993988 - [Calendar] remove first time use tutorial r=gaye

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https://hg.mozilla.org/integration/gaia-central/rev/2ffded82bc15
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Bug 993988 - [Calendar] remove first time use tutorial
Bumping manifests a=b2g-bump