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

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https://hg.mozilla.org/integration/gaia-central/rev/f33bce2f0c59
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #13943 from crdlc/bug-941313

Bug 941313 - [B2G][Homescreen] Able to open apps from adjacent homescree...

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https://hg.mozilla.org/integration/gaia-central/rev/4a055b55e528
Author: crdlc <crdlc@tid.es>
Desc: Bug 941313 - [B2G][Homescreen] Able to open apps from adjacent homescreen panes