Bumping gaia.json for 1 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/34dac595bf78
Author: Amir Nissim <amirn@everything.me>
Desc: Revert "Bug 921092 - [e.me] Reverse order of newly added apps in Collections"

This reverts commit 7f96c72f2cbe060fd372cb1208fe23c8ebd18158.