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

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https://hg.mozilla.org/integration/gaia-central/rev/c51f09ca8ebb
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Merge pull request #12266 from comoyo/profanity2

Bug 803189 - Allow profane words in dictionary but dont suggest them. r=RudyL

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https://hg.mozilla.org/integration/gaia-central/rev/e3cfd8b71c6c
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Bug 803189 - Allow profane words in dictionary but dont suggest them