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

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https://hg.mozilla.org/integration/gaia-central/rev/f06d04b474eb
Author: Julien Wajsberg <felash@gmail.com>
Desc: Merge pull request #18168 from julienw/994622-ignore-network-errors

Bug 994622 - [Build] Ignore network error when trying to fetch the node_...

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https://hg.mozilla.org/integration/gaia-central/rev/18a79a0db39e
Author: Julien Wajsberg <julien@mozilla.com>
Desc: Bug 994622 - [Build] Ignore network error when trying to fetch the node_modules from github r=yurenju
Bumping manifests a=b2g-bump