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

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https://hg.mozilla.org/integration/gaia-central/rev/0b14abb51081
Author: Wilson Page <wilsonpage@me.com>
Desc: Merge pull request #23103 from wilsonpage/1015296

Bug 1015296 - [Ringtones] Update to use gaia-header

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https://hg.mozilla.org/integration/gaia-central/rev/417f437fbdf6
Author: Yan Or <yor@mozilla.com>
Desc: Bug 1015296 - [Ringtones] Update to use gaia-header
Bumping manifests a=b2g-bump