Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_4/rev/1a6a7d85a77b
Author: Julien Wajsberg <felash@gmail.com>
Desc: Merge pull request #21606 from julienw/1033472-v1.4-improve-node-modules-dependencies

Bug 1033472 - v1.4 improve node modules dependencies a=tests

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https://hg.mozilla.org/integration/gaia-1_4/rev/48963caef3a6
Author: Julien Wajsberg <felash@gmail.com>
Desc: Merge pull request #21546 from julienw/1033472-improve-node-modules-dependencies

Bug 1033472 - Gaia linter, gaia-build tests aren't using NODE_MODULES_GI...
(cherry picked from commit 10f141af83815940d1bd2b00a05c4f2e0965a0e3)

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https://hg.mozilla.org/integration/gaia-1_4/rev/0ab5c18ad9f6
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_...
(cherry picked from commit 2f947be0ca2a64aa142c0d2e8305cc6d41f9121f)
Bumping manifests a=b2g-bump