Bumping gaia.json for 2 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/ed5a3d6a6f1d
Author: James Lal <james@lightsofapollo.com>
Desc: Merge pull request #11998 from lightsofapollo/email-card-stability

Bug 913625 - Resolve flakey test issues with email reply tests r=lightso...

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https://hg.mozilla.org/integration/gaia-central/rev/a26cb2fa19b1
Author: James Lal <james@lightsofapollo.com>
Desc: Bug 913625 - Resolve flakey test issues with email reply tests r=lightsofapollo (jrburke did work in other bug)