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

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https://hg.mozilla.org/integration/gaia-central/rev/ebc09c51bba4
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #14303 from askeing/945624

Bug 945624 - Unxfail test_sms_to_dialer.py

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https://hg.mozilla.org/integration/gaia-central/rev/5bab8e328dc6
Author: askeing <askeing@gmail.com>
Desc: Bug 945624 - Unxfail test_sms_to_dialer.py