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

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https://hg.mozilla.org/integration/gaia-central/rev/0eeca546cc0b
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #13610 from jmcanterafonseca/tel_prefix_tree

Bug 937042 - Create a prefix tree to enable Facebook phone number autoco...

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https://hg.mozilla.org/integration/gaia-central/rev/18438c47469e
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 937042 - Create a prefix tree to enable Facebook phone number autocompletion in dialer and SMS apps