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

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https://hg.mozilla.org/integration/gaia-2_1/rev/c3d25a9fb65c
Author: Florin Strugariu <florin.strugariu@softvision.ro>
Desc: Merge pull request #24389 from viorelaioia/bug_1068619_v2.1_

Bug 1068619 - [v2.2] [v2.1] Investigate test_browser_search failure

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https://hg.mozilla.org/integration/gaia-2_1/rev/98fbe310f3da
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 1068619 - [v2.2] [v2.1] Investigate test_browser_search failure
Bumping manifests a=b2g-bump