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

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https://hg.mozilla.org/integration/gaia-central/rev/9741ec155a3f
Author: Kevin Hu <kaichih.hu@gmail.com>
Desc: Merge pull request #27033 from kaichih/revert-bug-964580

Revert "Fix Bug 964580"

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https://hg.mozilla.org/integration/gaia-central/rev/3b499d56a6e2
Author: Kevin Hu <kaichih.hu@gmail.com>
Desc: Revert "Fix Bug 964580"

This reverts commit 087d2538ed8ad5231656299ac604e4a37fa2a789.
Bumping manifests a=b2g-bump