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

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https://hg.mozilla.org/integration/gaia-central/rev/10092b43a8b6
Author: ochameau <poirot.alex@gmail.com>
Desc: Merge pull request #18598 from ochameau/settings

Bug 999475 - Allows overloading SETTINGS_PATH with env variable. r=yurenju

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https://hg.mozilla.org/integration/gaia-central/rev/9e1eb176680f
Author: Alexandre Poirot <poirot.alex@gmail.com>
Desc: Bug 999475 - Allows overloading SETTINGS_PATH with env variable. r=yurenju
Bumping manifests a=b2g-bump