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

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https://hg.mozilla.org/integration/gaia-central/rev/667742f9e04c
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #22086 from flodolo/lockscreen_rtl

Bug 1042879 - [rtl] Lockscreen: display camera icon on the left when passcode is enabled. r=gweng

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https://hg.mozilla.org/integration/gaia-central/rev/9b62cef71d07
Author: Francesco Lodolo (:flod) <flod@lodolo.net>
Desc: Bug 1042879 - [rtl] Lockscreen: display camera icon on the left when passcode is enabled
Bumping manifests a=b2g-bump