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

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https://hg.mozilla.org/integration/gaia-central/rev/e4b8f3ed4be2
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #13244 from TheoChevalier/bug-906238-master

Bug 906238 - [l10n] manual not localized in Cellular & Data >Network ope... r=crh0716

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https://hg.mozilla.org/integration/gaia-central/rev/1ad6b42169ca
Author: TheoChevalier <theo.chevalier11@gmail.com>
Desc: Bug 906238 - [l10n] manual not localized in Cellular & Data >Network operator > Automatic selection