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

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https://hg.mozilla.org/integration/gaia-central/rev/f77cc11f08f7
Author: Ben Francis <ben@tola.me.uk>
Desc: Merge pull request #10507 from daleharvey/806173

Bug 806173 - Dont show url button when there is no input r=benfrancis

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https://hg.mozilla.org/integration/gaia-central/rev/c9d8cc55a086
Author: Dale Harvey <dale@arandomurl.com>
Desc: Bug 806173 - Dont show url button when there is no input
bug 885408 - add leo m-c builds. r=catlee
bug 885407 - add hamachi m-c builds. r=catlee