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

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https://hg.mozilla.org/integration/gaia-central/rev/3ca2bdd261c9
Author: Amir Nissim <amirnissim@gmail.com>
Desc: Merge pull request #15721 from EverythingMe/bug-964215

Bug 964215 - [Everything.me] Labels in Collection suggestions list do not match ones created on Homescreen [r=ranbena]

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https://hg.mozilla.org/integration/gaia-central/rev/4cf61c7e4cfb
Author: Amir Nissim <amirnissim@gmail.com>
Desc: Bug 964215 - [Everything.me] Labels in Collection suggestions list do not match ones created on Homescreen [r=ranbena]
Bumping manifests a=b2g-bump