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

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https://hg.mozilla.org/integration/gaia-central/rev/f0b67dc48e81
Author: Fernando Campo <fcampo@users.noreply.github.com>
Desc: Merge pull request #21190 from fcampo/settings-sms-935891

Bug 935891 - [Settings] show MSMC on Messages panel (r=arthurcc)

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https://hg.mozilla.org/integration/gaia-central/rev/80843997d76f
Author: Fernando Campo <fernando.campo@telefonica.com>
Desc: Bug 935891 - [Settings] show MSMC on Messages panel
Bumping manifests a=b2g-bump