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

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https://hg.mozilla.org/integration/gaia-central/rev/8edab03e2f1e
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #24233 from davidflanagan/bug1070195

Bug 1070195: free canvas memory after creating a video poster image in Camera r=wilsonpage

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https://hg.mozilla.org/integration/gaia-central/rev/8d9ddbb120af
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Bug 1070195: free canvas memory after creating a video poster image in Camera app
Bumping manifests a=b2g-bump