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

========

https://hg.mozilla.org/integration/gaia-central/rev/bb654d6017aa
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Merge pull request #12656 from arcturus/bug-914191

Bug 914191 - [Contacts] Import contacts from SD card make phone not enter sleep.

========

https://hg.mozilla.org/integration/gaia-central/rev/a78cd31786db
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Bug 914191 - [Contacts] Import contacts from SD card make phone not enter sleep.

========

https://hg.mozilla.org/integration/gaia-central/rev/d30466480e07
Author: Ran Ben Aharon <ran@ranbena.com>
Desc: [Bug 903405] [E.me][L10n] After changing language,
the description in e.me should change [r=crdlc]