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

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https://hg.mozilla.org/integration/gaia-central/rev/127056fcae9c
Author: vingtetun <21@vingtetun.org>
Desc: Merge pull request #16299 from vingtetun/972245

Bug 972245 - Facebook photos can appear distorted in the call log. r=eti...

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https://hg.mozilla.org/integration/gaia-central/rev/c53ed369c478
Author: Vivien Nicolas <21@vingtetun.org>
Desc: Bug 972245 - Facebook photos can appear distorted in the call log. r=etienne
Bumping manifests a=b2g-bump