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

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https://hg.mozilla.org/integration/gaia-central/rev/893d7a1cf6b6
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #12202 from crdlc/bug-916050

Bug 916050 - We can save 700-1000kbs of memory loading confirm dialog in a lazy mode and deleting IccHelper when is finished

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https://hg.mozilla.org/integration/gaia-central/rev/55033a80bf3d
Author: crdlc <crdlc@tid.es>
Desc: Bug 916050 - We can save 700-1000kbs of memory loading confirm dialog in a lazy mode and deleting IccHelper when is finished