Bumping gaia.json for 3 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/a57a913f1dd7
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Revert "Bug 923152 - Group non-latin names on import contacts"

This reverts commit 1733c32d7a8398f5e09d4389d7b9a2f45caafaeb.

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https://hg.mozilla.org/integration/gaia-central/rev/097f13b2056b
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #12664 from gitmai/bug-923152-group-non-latin-names-import

Bug 923152 - Group non-latin names on import contacts

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https://hg.mozilla.org/integration/gaia-central/rev/9955af784ef0
Author: mai <mri@tid.es>
Desc: Bug 923152 - Group non-latin names on import contacts