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

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https://hg.mozilla.org/integration/gaia-central/rev/166db5104afa
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Merge pull request #14504 from etiennesegonzac/bug-943716-flatfish-contact-bug

Bug 943716 - Don't try dialing from the contact app if if mozTelephony is unavailable. r=arcturus

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https://hg.mozilla.org/integration/gaia-central/rev/30d34bbafa43
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Bug 943716 - Don't try dialing from the contact app if if mozTelephony
is unavailable. r=arcturus