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

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https://hg.mozilla.org/integration/gaia-central/rev/f7361d61cb88
Author: Ben Francis <ben@tola.me.uk>
Desc: Merge pull request #12191 from alivedise/bugzilla/916007/browser-capture

Bug 916007 - Add audio-capture permission to browser r=benfrancis

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https://hg.mozilla.org/integration/gaia-central/rev/fbd2843679a1
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 916007 - Add audio-capture permission to browser