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

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https://hg.mozilla.org/integration/gaia-central/rev/f60de18e4b68
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Merge pull request #20948 from millermedeiros/837671-startup-events

Bug 837671 - [calendar] Implement new startup loading events r=gaye

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https://hg.mozilla.org/integration/gaia-central/rev/3a0dfbb11d11
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Bug 837671 - [calendar] Implement new startup loading events
Bumping manifests a=b2g-bump