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

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https://hg.mozilla.org/integration/gaia-central/rev/0c5b81fd733b
Author: Julien Wajsberg <felash@gmail.com>
Desc: Merge pull request #15711 from steveck-chung/DSDS-sim_switch_for_MMS

Bug 961938 - [DSDS][MMS] Switching data confirmation message will pop up twice r=julien

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https://hg.mozilla.org/integration/gaia-central/rev/f70cbde99b0d
Author: Steve Chung <schung@mozilla.com>
Desc: Bug 961938 - [DSDS][MMS] Switching data confirmation message will pop up twice
Bumping manifests a=b2g-bump