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

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https://hg.mozilla.org/integration/gaia-central/rev/f0c7f6367ac1
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Merge pull request #14414 from arcturus/bug-940294

Bug 940294 - [Download Manager] Implement the flow when the user opens a file and this action fails from notifications

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https://hg.mozilla.org/integration/gaia-central/rev/08e29ec41fa0
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Bug 940294 - [Download Manager] Implement the flow when the user opens a file and this action fails from notifications