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

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https://hg.mozilla.org/integration/gaia-central/rev/654f171deb50
Author: Wilson Page <wilsonpage@me.com>
Desc: Merge pull request #21956 from wilsonpage/1040982

Bug 1040982 - [Camera][Hamachi] Doesn't show loading spinner on start-up

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https://hg.mozilla.org/integration/gaia-central/rev/dd5d1aba7fb8
Author: Wilson Page <wilsonpage@me.com>
Desc: Bug 1040982 - [Camera][Hamachi] Doesn't show loading spinner on start-up
Bumping manifests a=b2g-bump