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

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https://hg.mozilla.org/integration/gaia-central/rev/da380c144e33
Author: steveck-chung <schung@mozilla.com>
Desc: Merge pull request #14442 from steveck-chung/DSDS-sim_switch_for_MMS

Bug 945649 - [DSDS][MMS] Switching data call message is wrong when try to switch data call to SIM 2. r=julienw

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https://hg.mozilla.org/integration/gaia-central/rev/fe5457b0c35a
Author: Steve Chung <schung@mozilla.com>
Desc: Bug 945649 - [DSDS][MMS] Switching data call message is wrong when try to switch data call to SIM 2