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

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https://hg.mozilla.org/integration/gaia-central/rev/d5eb693006ae
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Merge pull request #25612 from ythej/MMS_1058526

Fix for bug 1058526

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https://hg.mozilla.org/integration/gaia-central/rev/a575c4c05337
Author: Vishnu Teja <vish.thej@gmail.com>
Desc: Bug 1058526 - Poor grammar in MMS error message r=julien
Bumping manifests a=b2g-bump