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

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https://hg.mozilla.org/integration/gaia-central/rev/e627a2b5f441
Author: albertopq <albert.pastor@gmail.com>
Desc: Merge pull request #24045 from albertopq/1066847-statusbar-icons-dark

Bug 1066847 -  Statusbar icons disappear in utility tray r=mhenretty

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https://hg.mozilla.org/integration/gaia-central/rev/c7f4108710f3
Author: albertopq <apastor@mozilla.com>
Desc: Bug 1066847 -  Statusbar icons disappear in utility tray r=mhenretty
Bumping manifests a=b2g-bump