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

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https://hg.mozilla.org/integration/gaia-central/rev/af35006eefb4
Author: Julien Wajsberg <felash@gmail.com>
Desc: Merge pull request #14756 from julienw/936369-fix-keyboard-manager

Bug 936369 - [system] Intermittent Travis Unit Test Failure: KeyboardMan...

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https://hg.mozilla.org/integration/gaia-central/rev/1b2c85cee3bc
Author: Julien Wajsberg <felash@gmail.com>
Desc: Bug 936369 - [system] Intermittent Travis Unit Test Failure: KeyboardManager Transitions Call showKeyboard against visible keyboard: Error: timeout of 2000ms exceeded r=janjongboom

LOOK MA NO INTERMITTENT!