Bumping gaia.json for 6 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/21a0cc53a1e7
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Merge pull request #11633 from asutherland/email-reply-trim-ws

Bug 893579 - [Email] Trim whitespaces in contact name. r=asuth

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https://hg.mozilla.org/integration/gaia-central/rev/e1d09a2791d1
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Bug 893579 - [Email] Trim whitespaces in contact name. r=asuth

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https://hg.mozilla.org/integration/gaia-central/rev/cb7a5b5887bd
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #11584 from alivedise/bugzilla/905275_master/dont-lock-when-promixity-sensor-turn-off-screen

Bug 905275 - Do not lock if screen is turned off by proximity sensor. r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/7bb23dc0278f
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 905275 - Do not lock if screen is turned off by proximity sensor.

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https://hg.mozilla.org/integration/gaia-central/rev/f0e3d5748ad4
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Merge pull request #11632 from asutherland/email-jswbxml-mocha

Bug 902070 - [email/activesync] Change jswbxml to run its unit tests under mocha. r=squib

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https://hg.mozilla.org/integration/gaia-central/rev/87c57774a04e
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Bug 902070 - [email/activesync] Change jswbxml to run its unit tests under mocha. r=squib