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

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https://hg.mozilla.org/integration/gaia-central/rev/d801580839ab
Author: Jared Hirsch <ohai@6a68.net>
Desc: Merge pull request #20834 from 6a68/revert-bug-1023419

Revert "Bug 1023419 - Unify strings in Firefox Accounts and Find my devi...

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https://hg.mozilla.org/integration/gaia-central/rev/29a0a3223669
Author: Jared Hirsch <ohai@6a68.net>
Desc: Revert "Bug 1023419 - Unify strings in Firefox Accounts and Find my device. r=ggp"

This reverts commit 2f77e2686dcd3964498eaca68b244dc6df8c7bf2.
Bumping manifests a=b2g-bump