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

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https://hg.mozilla.org/integration/gaia-central/rev/467cf6acf046
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Merge pull request #11824 from leob2g/Bug_884698_Synchronize_Setting_Hide_For_IMAP

 Bug 884698 - [Buri][Email]The synchronize option in IMAP account does not work. r=asuth

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https://hg.mozilla.org/integration/gaia-central/rev/39df6ab384a7
Author: praveen.singapati <praveen.singapati@lge.com>
Desc:  Bug 884698 - [Buri][Email]The synchronize option in IMAP account does not work

Fixed lint error