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

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https://hg.mozilla.org/integration/gaia-central/rev/c865add68c33
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #12663 from crdlc/bug-923622

Bug 923622 - Avoid flickering showing the context menu dialog and implement a smooth transition

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https://hg.mozilla.org/integration/gaia-central/rev/e0e9c3fd8c8c
Author: crdlc <crdlc@tid.es>
Desc: Bug 923622 - Avoid flickering showing the context menu dialog and implement a smooth transition