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

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https://hg.mozilla.org/integration/gaia-central/rev/b32a4667a4a2
Author: Gabriele Svelto <gsvelto@mozilla.com>
Desc: Bug 1098146 - Reworded the content provisioning confirmation message r=me

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https://hg.mozilla.org/integration/gaia-central/rev/730d79cfb6bc
Author: John Hu <johu@mozilla.com>
Desc: Merge pull request #26175 from huchengtw-moz/bug-1094069-option-menu

Bug 1094069 - [Stingray][Settings] implement option menu and use landing..., r=dwi2

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https://hg.mozilla.org/integration/gaia-central/rev/ff5cd1b12bfe
Author: John Hu <johu@mozilla.com>
Desc: Bug 1094069 - [Stingray][Settings] implement option menu and use landing app as an example
Bumping manifests a=b2g-bump