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

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https://hg.mozilla.org/integration/gaia-central/rev/ee4c883c364f
Author: Florin Strugariu <florin.strugariu@softvision.ro>
Desc: Merge pull request #26243 from mwargers/youtube9

Bug 1047168 - Modify test_play_youtube to play a video file locally

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https://hg.mozilla.org/integration/gaia-central/rev/64949ae75d89
Author: Martijn Wargers <mwargers@mozilla.com>
Desc: Bug 1047168 - Modify test_play_youtube to play a video file locally
Bumping manifests a=b2g-bump