Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/0aa0d2ae3f0e
Author: Ghislain 'Aus' Lacroix <aus@noiseport.org>
Desc: Merge pull request #23050 from nullaus/bug1055228

bug 1055228 - Add download notification icon for states other than "down...

========

https://hg.mozilla.org/integration/gaia-central/rev/02002c395d85
Author: Ghislain 'Aus' Lacroix <aus@mozilla.com>
Desc: bug 1055228 - Add download notification icon for states other than "downloading" and use it. r=qDot

========

https://hg.mozilla.org/integration/gaia-central/rev/e9c7fb71fdaf
Author: Jim Porter <jporter@mozilla.com>
Desc: Merge pull request #22543 from jimporter/ringtones-mimetype

Bug 1045186 - [B2G][Ringtones] The user can not share ringtone through MMS

========

https://hg.mozilla.org/integration/gaia-central/rev/09e4910acb8e
Author: Jim Porter <jporter@mozilla.com>
Desc: Bug 1045186 - [B2G][Ringtones] The user can not share ringtone through MMS
Bumping manifests a=b2g-bump