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

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https://hg.mozilla.org/integration/gaia-central/rev/8a059e2fe0bd
Author: gasolin <gasolin@gmail.com>
Desc: Merge pull request #15024 from gasolin/issue-956627

Bug 956627 - [keyboard] Enable generate jsdoc, r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/b9ce4f960d16
Author: gasolin <gasolin@gmail.com>
Desc: Bug 956627 - [keyboard] Enable generate jsdoc