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

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https://hg.mozilla.org/integration/gaia-central/rev/d4470524279c
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #22141 from crdlc/bug-1043714

Bug 1043714 - Cannot drag and drop an app into a group with a full row o...

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https://hg.mozilla.org/integration/gaia-central/rev/2c3172831ba8
Author: crdlc <crdlc@tid.es>
Desc: Bug 1043714 - Cannot drag and drop an app into a group with a full row of collections easily
Bumping manifests a=b2g-bump