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

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https://hg.mozilla.org/integration/gaia-central/rev/da3a43fa2e36
Author: steveck-chung <schung@mozilla.com>
Desc: Merge pull request #11178 from steveck-chung/bug-895817

Bug 895817 - [SMS/MMS] Selecting a contact from facebook is not working. r=gnarf37

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https://hg.mozilla.org/integration/gaia-central/rev/71fe21f9d44a
Author: Steve Chung <schung@mozilla.com>
Desc: Bug 895817 - [SMS/MMS] Selecting a contact from facebook is not working