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

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https://hg.mozilla.org/integration/gaia-1_4/rev/94ef38465edd
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Revert "Revert "Bug 986753 - [Tarako] Alarm Clock can get killed in the background and never ring." for suspicion of breaking gaia integration tests"

This reverts commit a968d8cd00fa1f370a2ea7e3994b5bb5391affd7.

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https://hg.mozilla.org/integration/gaia-1_4/rev/9369e2b39f86
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #17519 from crdlc/bug-986047

Bug 986047 - [B2G][Dialer]Cannot select Add Comment when creating a new ...

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https://hg.mozilla.org/integration/gaia-1_4/rev/256fc4bc4841
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #17562 from crh0716/974253_v2

Bug 974253 - Set preferred network type on startup based on the user preference r=jaoo
Bumping manifests a=b2g-bump