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

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https://hg.mozilla.org/integration/gaia-central/rev/32149f835ebd
Author: Yuren Ju <yurenju@gmail.com>
Desc: Merge pull request #22963 from yurenju/newTabAppURL

Bug 1054822 - test case "settings.test.js" failed for an unexpected property "rocketbar.newTabAppURL" r=testonly

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https://hg.mozilla.org/integration/gaia-central/rev/be2ca172716e
Author: Yuren Ju <yurenju@gmail.com>
Desc: Bug 1054822 - test case "settings.test.js" failed for an unexpected property "rocketbar.newTabAppURL" r=testonly
Bumping manifests a=b2g-bump