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

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https://hg.mozilla.org/integration/gaia-central/rev/9a1e13c56ffe
Author: Anthony Ricaud <anthony@ricaud.me>
Desc: Merge pull request #16214 from millermedeiros/971691-travis-day-view-header

Bug 971691 - "day view header copy should not overflow" marionette js test is failing r=gaye

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https://hg.mozilla.org/integration/gaia-central/rev/b6d19d146067
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Bug 971691 - "day view header copy should not overflow" marionette js test is failing
Bumping manifests a=b2g-bump