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

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https://hg.mozilla.org/integration/gaia-central/rev/2fb6119da922
Author: gasolin <gasolin@gmail.com>
Desc: Merge pull request #22756 from gasolin/issue-1023735-4

Bug 1023735 - [Settings] Support new time format settings, r=arthur

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https://hg.mozilla.org/integration/gaia-central/rev/1dd0642e0a2c
Author: gasolin <gasolin@gmail.com>
Desc: Bug 1023735 - [Settings] Support new time format settings

- change langauge -> update hour12 value
- add default settings and l10n properties
- change timeZone -> redraw time field with user pref
- change time/dateFormat -> update time/date field with user pref
- change date/time field -> correct set date/time
- change date field -> redraw dateFormat with user pref
- add navigator.mozHour12 API shim
- fix date/time picker disabled in no SIM card state
Bumping manifests a=b2g-bump