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

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https://hg.mozilla.org/integration/gaia-central/rev/fbe8db49928d
Author: Reuben Morais <reuben.morais@gmail.com>
Desc: Merge pull request #13046 from reubenmorais/contacts-picker

Bug 929492 - Stop manually copying properties of Contact objects. r=bkelly

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https://hg.mozilla.org/integration/gaia-central/rev/b9ea1a2713df
Author: Reuben Morais <reuben.morais@gmail.com>
Desc: Bug 929492 - Stop manually copying properties of Contact objects. r=bkelly
Bug 917642 - [Helix] Please update the helix blobs. r=nhirata
Bumping gaia.json for 2 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/cf31c17dffa0
Author: James Lal <james@lightsofapollo.com>
Desc: Merge pull request #13361 from bobsilverberg/xfail_clock_tbpl

Bug 932491 - Intermittent test_clock_set_alarm_snooze.py

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https://hg.mozilla.org/integration/gaia-central/rev/7b4835712f51
Author: Bob Silverberg <bob.silverberg@gmail.com>
Desc: Bug 932491 - Intermittent test_clock_set_alarm_snooze.py