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

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https://hg.mozilla.org/integration/gaia-central/rev/3cc23620cc2e
Author: Rex KM Lee <rexboy@mozilla.com>
Desc: Merge pull request #11186 from rexboy7/fix-bug896901

Bug 896901 - [Email] Change style for account type selector of manual se...

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https://hg.mozilla.org/integration/gaia-central/rev/1511a9f6f78f
Author: Rex Lee <rexboy@mozilla.com>
Desc: Bug 896901 - [Email] Change style for account type selector of manual setup