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

========

https://hg.mozilla.org/integration/gaia-central/rev/265cfcff3e99
Author: James Lal <james@lightsofapollo.com>
Desc: Merge pull request #13360 from bobsilverberg/xfail_clock_tbpl

Bug 932491 - Intermittent test_clock_set_alarm_snooze.py

========

https://hg.mozilla.org/integration/gaia-central/rev/449a4ad15a96
Author: Bob Silverberg <bob.silverberg@gmail.com>
Desc: Bug 932491 - Intermittent test_clock_set_alarm_snooze.py