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

========

https://hg.mozilla.org/integration/gaia-central/rev/48b1f885ed1f
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #13430 from zacc/bug_932491

bug 932491 - Address intermittent errors in test_clock_set_alarm_snooze....

========

https://hg.mozilla.org/integration/gaia-central/rev/ca2a132409a0
Author: Zac Campbell <zcampbell@mozilla.com>
Desc: bug 932491 - Address intermittent errors in test_clock_set_alarm_snooze.py