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

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https://hg.mozilla.org/integration/gaia-central/rev/1e59ef8cda3f
Author: Julien Wajsberg <felash@gmail.com>
Desc: Merge pull request #17839 from cvan/updated-mkt

Bug 989470 - Fix MCC/MNC dual SIM detection in Marketplace app
r=julien

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https://hg.mozilla.org/integration/gaia-central/rev/928ceff77436
Author: Christopher Van <cvan@mozilla.com>
Desc: Bug 989470 - Fix MCC/MNC dual SIM detection in Marketplace app
Bumping manifests a=b2g-bump