Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/9ceafa08e344
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 990798 - [Clock] Disable intermittent failing test, alarm_test.js

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https://hg.mozilla.org/integration/gaia-central/rev/0d9ef5181317
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Merge pull request #18611 from millermedeiros/972871-icon-font-2

Bug 972871 - [Calendar] custom font with vector icons used by visual refresh r=gaye

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https://hg.mozilla.org/integration/gaia-central/rev/05cf69edbe81
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Bug 972871 - [Calendar] custom font with vector icons used by visual refresh
Bumping manifests a=b2g-bump