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

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https://hg.mozilla.org/integration/gaia-1_3/rev/d38a85b2f82f
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Bug 972666 - [Calendar] lines over events longer than 2 hours

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https://hg.mozilla.org/integration/gaia-1_3/rev/9e7a0f9415aa
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Revert "Bug 972666 - [Calendar] lines over events longer than 2 hours"

This reverts commit 8aed4fafbaeb86d6884d31ce7d3cbeb87bcbf837.
Bumping manifests a=b2g-bump