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

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https://hg.mozilla.org/integration/gaia-central/rev/98f191869b0c
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #12310 from jmcanterafonseca/bug-916096

Bug 916096 - [Contacts] Incorrect message to show the matching field in ...

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https://hg.mozilla.org/integration/gaia-central/rev/c3470b4ea0ee
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 916096 - [Contacts] Incorrect message to show the matching field in Merge duplicates screen