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

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https://hg.mozilla.org/integration/gaia-central/rev/3ab583c710f5
Author: Salvador de la Puente González <salva@unoyunodiez.com>
Desc: Merge pull request #12033 from lodr/bug-914117-fixing-no-sms-topup-scenario

Bug 914117 - Checking for top up senders existence before parsing
r=jmcf

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https://hg.mozilla.org/integration/gaia-central/rev/602218bdd036
Author: lodr <salva@unoyunodiez.com>
Desc: Bug 914117 - Checking for top up senders existence before parsing