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

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https://hg.mozilla.org/integration/gaia-central/rev/5667d1479dfd
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #21731 from weideng/bug1038516

 [Keyboard][Pinyin] Switch back to default page instead of symbol panel. r=rlu

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https://hg.mozilla.org/integration/gaia-central/rev/1f32d9f3cc94
Author: wdeng <wdeng@mozilla.com>
Desc:  [Keyboard][Pinyin] Switch back to default page instead of symbol panel
Bumping manifests a=b2g-bump