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

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https://hg.mozilla.org/integration/gaia-1_4/rev/fe182bd6b625
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #19240 from crdlc/bug-bug-1008586-v2

Bug 1008586 - [Homescreen] Missing collections icons
Bumping manifests a=b2g-bump