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

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https://hg.mozilla.org/integration/gaia-central/rev/710f0fb5fe0e
Author: Malini Das <thehyperballad@gmail.com>
Desc: Merge pull request #25383 from malini/marionette-apps-update

Bug 1087593 - bump marionette-apps version to v0.3.11

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https://hg.mozilla.org/integration/gaia-central/rev/97039de14ab9
Author: Malini Das <mdas@mozilla.com>
Desc: Bug 1087593 - bump marionette-apps version to v0.3.11
Bumping manifests a=b2g-bump