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

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https://hg.mozilla.org/integration/gaia-central/rev/f664d0cd5947
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #13039 from zacc/930044

Bug 930044 - Python UI tests Enhance wait in test_sms_with_attachments t...

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https://hg.mozilla.org/integration/gaia-central/rev/fe9d45336f68
Author: Zac Campbell <zcampbell@mozilla.com>
Desc: Bug 930044 - Python UI tests Enhance wait in test_sms_with_attachments to wait for messages app to resize the attached image