Bumping gaia.json for 2 gaia-1_2 revision(s) a=NPOTB

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https://hg.mozilla.org/integration/gaia-1_2/rev/1337614afbc5
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #12303 from KevinGrandon/kevin-v1.2

Revert "Bug 911696 - [Dialer] [Flatfish] hide dialer app in homescreen if no telephony support" r=fabrice

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https://hg.mozilla.org/integration/gaia-1_2/rev/5635bf29e21b
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Revert "Bug 911696 - [Dialer] [Flatfish] hide dialer app in homescreen if no telephony support"

This reverts commit 4cfe3660a8f293f54c111d07fca5cec6089bd32a.