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

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https://hg.mozilla.org/integration/gaia-central/rev/d82c6502cdd7
Author: Eric Chou <echou@mozilla.com>
Desc: Merge pull request #14353 from eric30/Bug-945631

Bug 945631 - Listen to event discoverystatechanged, r=arthurcc

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https://hg.mozilla.org/integration/gaia-central/rev/42a64ca5cfa8
Author: Eric Chou <echou@mozilla.com>
Desc: Bug 945631 - Listen to event discoverystatechanged
Bumping manifests a=b2g-bump