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

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https://hg.mozilla.org/integration/gaia-central/rev/9ba62e3061ab
Author: Casey Yee <cyee@mozilla.com>
Desc: Merge pull request #14032 from caseyyee/bug-943005

Bug 943005: [Browser] Update to light 1.3 header

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https://hg.mozilla.org/integration/gaia-central/rev/aee649ab8fac
Author: Casey Yee <casey@caseyyee.com>
Desc: Bug 943005: [Browser] Update to light 1.3 header