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

========

https://hg.mozilla.org/integration/gaia-central/rev/a74a4628096f
Author: Salvador de la Puente González <salva@unoyunodiez.com>
Desc: Merge pull request #11958 from lodr/bug-913073-avoiding-showing-name-and-lastname-as-lists

Bug 913073 - Make templates.js gets the first value in case of the template field is an array.
r=jmcf

========

https://hg.mozilla.org/integration/gaia-central/rev/c8ca7f8b1042
Author: lodr <salva@unoyunodiez.com>
Desc: Bug 913073 - Make templates.js gets the first value in case of the template field is an array. Fixing edition to consider givenName and familyName as arrays.