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

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https://hg.mozilla.org/integration/gaia-central/rev/ccd8b59df623
Author: Wilson Page <wilsonpage@me.com>
Desc: Merge pull request #21394 from wilsonpage/1034546

Bug 1034546 - [Camera] Use external gaia-icons repo

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https://hg.mozilla.org/integration/gaia-central/rev/d3480a2eb410
Author: Wilson Page <wilsonpage@me.com>
Desc: Bug 1034546 - [Camera] Use external gaia-icons repo
Bumping manifests a=b2g-bump