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

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https://hg.mozilla.org/integration/gaia-central/rev/850766ad4d3c
Author: viorelaioia <viorela.ioia@softvision.ro>
Desc: Merge pull request #25937 from chirarobert/bug_1095531

Bug 1095531 - [v2.2] Un-xfail test_dialer_airplane_mode

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https://hg.mozilla.org/integration/gaia-central/rev/d7210e4ae40f
Author: Robert Chira <robertchira@P5075.(none)>
Desc: Bug 1095531 - [v2.2] Un-xfail test_dialer_airplane_mode
Bumping manifests a=b2g-bump