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

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https://hg.mozilla.org/integration/gaia-central/rev/b089cffa3672
Author: Malini Das <thehyperballad@gmail.com>
Desc: Merge pull request #25898 from malini/uifix

Bug 1095053 - remove --ui when invoking marionette-mocha, r=eperelman

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https://hg.mozilla.org/integration/gaia-central/rev/5d65e3227766
Author: Malini Das <mdas@mozilla.com>
Desc: Bug 1095053 - remove --ui when invoking marionette-mocha
Bumping manifests a=b2g-bump