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

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https://hg.mozilla.org/integration/gaia-central/rev/e1e0cbb1ed09
Author: Casey Yee <cyee@mozilla.com>
Desc: Merge pull request #14128 from Joshua-S/Bug-943002

[Bug 943002] - [Video] Update to Dark 1.3 Header
r=dmarcos

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https://hg.mozilla.org/integration/gaia-central/rev/f2dd0817b125
Author: Joshua Smith <joshua-smith@verizon.net>
Desc: Fix Bug 943002