Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/65124b4dde97
Author: Zac Campbell <zcampbell@mozilla.com>
Desc: Revert "Bug 974906 - Xfail test_camera_capture_video.py because of Bug 974851."

This reverts commit 6773129d877db48f3183782a1aefea4091393f1a.
Bumping manifests a=b2g-bump