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

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https://hg.mozilla.org/integration/gaia-central/rev/90881d456cd5
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #12328 from jmcanterafonseca/bug-917701

Bug 917701 - [Contacts] Passive merging is not working when the contact ...

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https://hg.mozilla.org/integration/gaia-central/rev/a0ae358b8d94
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 917701 - [Contacts] Passive merging is not working when the contact in the contact list is linked to a FB contact