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

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https://hg.mozilla.org/integration/gaia-2_0/rev/d84919a0f11f
Author: Ghislain 'Aus' Lacroix <aus@noiseport.org>
Desc: Merge pull request #23275 from nullaus/v2.0

Merge pull request #23226 from nullaus/bug1055352

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https://hg.mozilla.org/integration/gaia-2_0/rev/b5db3801ea3c
Author: Ghislain 'Aus' Lacroix <aus@noiseport.org>
Desc: Merge pull request #23226 from nullaus/bug1055352

bug 1055352 - Do not process finalized state changes in the downloads li...
(cherry picked from commit 90071b13f73282c8b96990135952b4fe7eccc869)
Bumping manifests a=b2g-bump