Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/ea20cd6951db
Author: Gabriele Svelto <gsvelto@mozilla.com>
Desc: Bug 1096305 - Corrected the en-US l10n id of the content provisioning configuration accept message r=julienw

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https://hg.mozilla.org/integration/gaia-central/rev/98d2f9f656f4
Author: Marina <marina.rodrigueziglesias@telefonica.com>
Desc: Merge pull request #25691 from gitmai/bug-1086216-usage-adding-msg-to-unknow-state

Bug 1086216 - [Usage][Airplane Mode] Launching Usage app with Airplane m...
r=salva

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https://hg.mozilla.org/integration/gaia-central/rev/5999b5edfd5f
Author: mai <mri@tid.es>
Desc: Bug 1086216 - [Usage][Airplane Mode] Launching Usage app with Airplane mode after restart shows 'no sim' message instead 'simcard not ready'
Bumping manifests a=b2g-bump