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

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https://hg.mozilla.org/integration/gaia-central/rev/37cfc172e9e3
Author: EragonJ <eragonj@eragonj.me>
Desc: Merge pull request #15243 from EragonJ/bug-950307-extra-fix

Bug 950307 - [DSDS] Settings: rename sim-manager-outgoing-data-desc

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https://hg.mozilla.org/integration/gaia-central/rev/29ce6e89d002
Author: EragonJ <eragonj@eragonj.me>
Desc: Bug 950307 - [DSDS] Settings: rename sim-manager-outgoing-data-desc