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

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https://hg.mozilla.org/integration/gaia-2_1/rev/7e3fe2c16398
Author: viorelaioia <viorela.ioia@softvision.ro>
Desc: Merge pull request #25807 from JohanLorenzo/bug-1087926-v2.1

Bug 1087926 - Add a test to check that a Contact's photo appears when re...

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https://hg.mozilla.org/integration/gaia-2_1/rev/85c93ee888b1
Author: Johan Lorenzo <jlorenzo@mozilla.com>
Desc: Bug 1087926 - Add a test to check that a Contact's photo appears when receiving a call
Bumping manifests a=b2g-bump