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

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https://hg.mozilla.org/integration/gaia-central/rev/6bb172b2c8d9
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Merge pull request #11666 from comoyo/replaceSurroundingText_newline

Bug 902847 - IME test for replaceSurroundingText with carriage returns. r=yxl

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https://hg.mozilla.org/integration/gaia-central/rev/33909bad3c8e
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Bug 902847 - IME test for contenteditable with newlines and replaceSurroundingText