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

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https://hg.mozilla.org/integration/gaia-central/rev/a41f98ec2606
Author: ochameau <poirot.alex@gmail.com>
Desc: Merge pull request #19886 from ochameau/post-app

Bug 1019058 - Merge all after app-makefile js target into a single one. r=yurenju

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https://hg.mozilla.org/integration/gaia-central/rev/26a0b9baf743
Author: Alexandre Poirot <poirot.alex@gmail.com>
Desc: Bug 1021051 - Merge all after app-makefile js target into a single one. r=yurenju
Bumping manifests a=b2g-bump