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

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https://hg.mozilla.org/integration/gaia-2_0/rev/050595fa1270
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #21857 from crdlc/bug-1039968

Bug 1039968 - [B2G][OTA] The icon order within pages is not preserved wh...(cherry picked from commit 9217c942888d34a02fd1402faa77a92d01246425)
Bumping manifests a=b2g-bump