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

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https://hg.mozilla.org/integration/gaia-central/rev/5ae393686108
Author: Fernando Campo <fernando.campo@o2.com>
Desc: Merge pull request #13091 from fcampo/wifi-timeout-889623

Bug 889623 - [FTE] need to be able to cancel Wifi Scanning. (r=julienw)

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https://hg.mozilla.org/integration/gaia-central/rev/47f7deea207e
Author: Fernando Campo <fernando.campo@o2.com>
Desc: Bug 889623 - [FTE] need to be able to cancel Wifi Scanning. Adding timeout