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

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https://hg.mozilla.org/integration/gaia-central/rev/0c71302645e2
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Merge pull request #13038 from comoyo/keyboard-height-changes

Bug 929911 - UpdateHeight on already visible keyboard doesn't throw keyboardchange event. r=RudyL

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https://hg.mozilla.org/integration/gaia-central/rev/f0a910c8d007
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Bug 929911 - UpdateHeight on already visible keyboard doesn't throw keyboardchange event