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

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https://hg.mozilla.org/integration/gaia-central/rev/98a167f1d429
Author: Wilson Page <wilsonpage@me.com>
Desc: Merge pull request #16371 from wilsonpage/bug/973616

Bug 973616 - [Camera] Videos should be recorded to final location

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https://hg.mozilla.org/integration/gaia-central/rev/7d379811cd0a
Author: Wilson Page <wilsonpage@me.com>
Desc: Bug 973616 - [Camera] Videos should be recorded to final location
Bumping manifests a=b2g-bump