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

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https://hg.mozilla.org/integration/gaia-central/rev/06c7c071929c
Author: Dominic Kuo <dkuo@mozilla.com>
Desc: Merge pull request #22616 from dominickuo/bug-1050112

Bug 1050112 - [Music] correct the media-button path, r=jimporter

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https://hg.mozilla.org/integration/gaia-central/rev/f8b7613ede49
Author: Dominic Kuo <dkuo@mozilla.com>
Desc: Bug 1050112 - [Music] correct the media-button path
Bumping manifests a=b2g-bump