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

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https://hg.mozilla.org/integration/gaia-central/rev/e4412cfbae69
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #20919 from crdlc/bug-1029167

Bug 1029167 - [B2G][2.0][Flame][Smart Collections] Missing Star Button (...

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https://hg.mozilla.org/integration/gaia-central/rev/017b98711ae9
Author: crdlc <crdlc@tid.es>
Desc: Bug 1029167 - [B2G][2.0][Flame][Smart Collections] Missing Star Button (bookmark) on Smart Collection App
Bumping manifests a=b2g-bump