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

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https://hg.mozilla.org/integration/gaia-central/rev/e4222141d674
Author: Yuren Ju <yurenju@gmail.com>
Desc: Merge pull request #16066 from RickyChien/issue-969229

Bug 969229 - Incorrect unit tests in test-agent GUI r=@yurenju

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https://hg.mozilla.org/integration/gaia-central/rev/22274cb3a0d0
Author: Ricky Chien <ricky060709@gmail.com>
Desc: Bug 969229 - Incorrect unit tests in test-agent GUI
Bumping manifests a=b2g-bump