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

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https://hg.mozilla.org/integration/gaia-central/rev/4ca3ef57093f
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #14309 from crdlc/bug-945678

Bug 945678 - [Download Manager] Implement shared flow when the user open...

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https://hg.mozilla.org/integration/gaia-central/rev/04314b9e5e24
Author: crdlc <crdlc@tid.es>
Desc: Bug 945678 - [Download Manager] Implement shared flow when the user opens a file and this action fails