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

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https://hg.mozilla.org/integration/gaia-central/rev/aed37d33163f
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Merge pull request #20967 from comoyo/bug995886

Bug 995886 - Homescreens overlap when process is killed when screen is off. r=timdream r=crdlc

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https://hg.mozilla.org/integration/gaia-central/rev/5915c6427f02
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Bug 995886 - Homescreens overlap when process is killed when screen is off
Bumping manifests a=b2g-bump