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

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https://hg.mozilla.org/integration/gaia-central/rev/e5ae80effc4e
Author: Fabrice Desré <fabrice@desre.org>
Desc: Merge pull request #21709 from fabricedesre/perm-prompt

Bug 1037030 - fix multiple prompt race r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/881db0fa7c12
Author: Fabrice Desre <fabrice@desre.org>
Desc: Bug 1037030 - fix multiple prompt race r=alive
Bumping manifests a=b2g-bump