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

========

https://hg.mozilla.org/integration/gaia-central/rev/32c4badad686
Author: John Hu <johu@mozilla.com>
Desc: Merge pull request #12536 from huchengtw-moz/video/Bug_914972_wrong_progress_bar_when_unplug_headset

[Buri][Video player]The progress bar displays wrong when unplug headset, r=djf

========

https://hg.mozilla.org/integration/gaia-central/rev/e5c4318a73f5
Author: John Hu <johu@mozilla.com>
Desc: Bug 914972 - [Buri][Video player]The progress bar displays wrong when unplug headset