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

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https://hg.mozilla.org/integration/gaia-central/rev/b24c2d662eb1
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #17941 from kombuta/master

Bug 976576 - [DSDS][SIM Manager] Change the title text for "Data" CTA r=crh0716

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https://hg.mozilla.org/integration/gaia-central/rev/f01fcc311064
Author: Lancelot Nyachoto <lancelot@quantum.com.na>
Desc: Bug 976576 - [DSDS][SIM Manager] Change the title text for "Data" CTA
  Change the description
  from "Internet connection, MMS, A-GPS and Marketplace payments will be sent from"
  to   "Data service network and Marketplace payments"

  Added a unique string id "sim-manager-outgoing-data-description"
Bumping manifests a=b2g-bump