Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/30e2c7de9707
Author: Diego Marcos <diego.marcos@gmail.com>
Desc: Merge pull request #22326 from dmarcos/bug1046316

Bug 1046316 - [Camera] Focus view not appended to viewfinder

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https://hg.mozilla.org/integration/gaia-central/rev/8351f9ef4bbd
Author: Diego Marcos <diego.marcos@gmail.com>
Desc: Bug 1046316 - [Camera] Focus view not appended to viewfinder

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https://hg.mozilla.org/integration/gaia-central/rev/25ec7352c30b
Author: vingtetun <21@vingtetun.org>
Desc: Merge pull request #22325 from vingtetun/followup-bugsmooth

Bug 1039519 - Implement a smooth transition to show/hide the rocketbar w...

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https://hg.mozilla.org/integration/gaia-central/rev/2de3cce4f8df
Author: Vivien Nicolas <vnicolas@mozilla.com>
Desc: Bug 1039519 - Implement a smooth transition to show/hide the rocketbar when scrolling up/down a page. Followup. r=me
Bumping manifests a=b2g-bump