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

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https://hg.mozilla.org/integration/gaia-central/rev/33aa6fa877e4
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #24424 from alivedise/bugzilla/1072757/settings-service-core

Bug 1072757 - Implement SettingsCore, r=etienne

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https://hg.mozilla.org/integration/gaia-central/rev/9bd78222e6e3
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 1072757 - Implement SettingsCore, BaseModule, Service Registration System
Bumping manifests a=b2g-bump