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

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https://hg.mozilla.org/integration/gaia-central/rev/e67a9ece551b
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #18869 from KevinGrandon/bug_985237_disable_failing_pinyin_test

Bug 985237 - Disable failing test, keyboard/test/unit/jspinyin_test.js | jspinyin deactivate

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https://hg.mozilla.org/integration/gaia-central/rev/671be39dd2ab
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 985237 - Disable failing test, keyboard/test/unit/jspinyin_test.js | jspinyin deactivate
Bumping manifests a=b2g-bump