Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-2_1/rev/5f0d10068219
Author: Robert Chira <robertchira@P5075.(none)>
Desc: Bug 1059245 - Update tests and framework to use the new Browser app
Bumping manifests a=b2g-bump