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

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https://hg.mozilla.org/integration/gaia-central/rev/debc0d9dde92
Author: albertopq <albert.pastor@gmail.com>
Desc: Merge pull request #24020 from albertopq/1066557-roaming-undefined

Bug 1066557 - roaming is undefined error r=mhenretty

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https://hg.mozilla.org/integration/gaia-central/rev/38c0da4df0a7
Author: albertopq <apastor@mozilla.com>
Desc: Bug 1066557 - roaming is undefined error
Bumping manifests a=b2g-bump