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

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https://hg.mozilla.org/integration/gaia-central/rev/119485d3bc4b
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Merge pull request #16992 from etiennesegonzac/bug-980984-incoming-alert-from-system

Bug 980984 - Alert the user of an incoming from the system app to improve performance.
r=alive, rik

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https://hg.mozilla.org/integration/gaia-central/rev/3d88afa29e3d
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Bug 980984 - Alert the user of an incoming from the system app to improve performance.
r=alive, rik
Bumping manifests a=b2g-bump