Bumping gaia.json for 2 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/41b850b0339d
Author: Yuren Ju <yurenju@gmail.com>
Desc: Merge pull request #10721 from yurenju/bug885228

Bug 885228: added 1.5x iamges in shared directory r=basiclines

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https://hg.mozilla.org/integration/gaia-central/rev/f03389a6de6c
Author: Yuren Ju <yurenju@gmail.com>
Desc: Bug 885228: added 1.5x iamges in shared directory