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

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https://hg.mozilla.org/integration/gaia-1_4/rev/2cbd2d6d9eab
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #20413 from weigao123/bug980217-v1.4

Bug 980217 - (v1.4) Make "Skip" and "OK" buttons show when entering SIM 2 PIN code on v1.4. r=alive

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https://hg.mozilla.org/integration/gaia-1_4/rev/b1415a576d5f
Author: wei.gao <wei.gao@spreadtrum.com>
Desc: Bug 980217 - Make "Skip" and "OK" buttons show when entering SIM 2 PIN code on v1.4. r=Alive
Bumping manifests a=b2g-bump