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

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https://hg.mozilla.org/integration/gaia-central/rev/22ae719385f4
Author: gasolin <gasolin@gmail.com>
Desc: Merge pull request #13875 from gasolin/issue-939011

Bug 939011 - [Keyboard]visual keyboard switcher status indicator, r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/754568765122
Author: gasolin <gasolin@gmail.com>
Desc: Bug 939011 - [Keyboard]visual keyboard switcher status indicator