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

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https://hg.mozilla.org/integration/gaia-central/rev/f71069d3ab46
Author: Rudy Lu <left.lu@gmail.com>
Desc: Merge pull request #10572 from RudyLu/keyboard/Bug796600-scrollable_keyboard_layout_menu_commit

Bug 796600 - make the keyboard layout menu scrollable. r=djf

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https://hg.mozilla.org/integration/gaia-central/rev/66836ba4ae35
Author: Rudy Lu <left.lu@gmail.com>
Desc: Bug 796600 - make the keyboard layout menu scrollable
 1. Add LOCKED_AREA so the menu will not be easily dismissed
 2. Will do continuous scrolling if you stick to the edge of the menu