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

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https://hg.mozilla.org/integration/gaia-2_1/rev/35998942de48
Author: Florin Strugariu <florin.strugariu@softvision.ro>
Desc: Merge pull request #26590 from viorelaioia/wait_for_call_end

Bug 1091679 - Update tests to wait for the plivo call to end

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https://hg.mozilla.org/integration/gaia-2_1/rev/a96106d86280
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 1091679 - Update tests to wait for the plivo call to end
Bumping manifests a=b2g-bump