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

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https://hg.mozilla.org/integration/gaia-central/rev/0fcdcfc13086
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Merge pull request #13404 from mcav/bleach-js-case-sensitivity

Bug 935276 - [email] Bleach.js doesn't handle closing HTML tags with different case. r=asuth

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https://hg.mozilla.org/integration/gaia-central/rev/e96d74b771f0
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Bug 935276 - [email] Bleach.js doesn't handle closing HTML tags with different case. r=asuth