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

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https://hg.mozilla.org/integration/gaia-central/rev/00e74c44f8ef
Author: Bob Silverberg <bob.silverberg@gmail.com>
Desc: Merge pull request #13806 from zacc/bug_939105

bug 939105 - Python test_sms_contact_match - wait for keyboard to be ful...

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https://hg.mozilla.org/integration/gaia-central/rev/c3889156c380
Author: Zac Campbell <zcampbell@mozilla.com>
Desc: bug 939105 - Python test_sms_contact_match - wait for keyboard to be fully opened before tapping on the keyboard