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

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https://hg.mozilla.org/integration/gaia-central/rev/d569a7fd0990
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Merge pull request #16737 from millermedeiros/972666-lines-over-events

Bug 972666 - [Calendar] lines over events longer than 2 hours r=gaye

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https://hg.mozilla.org/integration/gaia-central/rev/eb7dd1617df6
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Bug 972666 - [Calendar] lines over events longer than 2 hours
Bumping manifests a=b2g-bump