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

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https://hg.mozilla.org/integration/gaia-1_3/rev/e1441d1b2e12
Author: Marshall Culpepper <marshall.law@gmail.com>
Desc: Merge pull request #17859 from marshall/ftuPing_v1.3

Bug 969101: Initial implementation of a first-time use ping. r=fabrice

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https://hg.mozilla.org/integration/gaia-1_3/rev/fe95a000328c
Author: Marshall Culpepper <marshall@mozilla.com>
Desc: Bug 969101: Initial implementation of a first-time use ping. r=fabrice
Bumping manifests a=b2g-bump