Bumping gaia.json for 1 gaia-1_2 revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-1_2/rev/153ef41434bd
Author: Rudy Lu <me@rudy.lu>
Desc: Merge pull request #13565 from RudyLu/keyboard/Bug905241_and_Bug925318-disabled_keyboard_tutorial

Bug 925318 - Remove first time explanation on how to close the keyboard. r=rudylu
  - Also fixed Bug 905241.

(cherry picked from commit 1e212079cca612f9a91bd79ad6042f90748ce9d7)

Conflicts:
	build/settings.js