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

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https://hg.mozilla.org/integration/gaia-central/rev/c80f20c5b211
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #20075 from guilherme-pg/bug1002581-fmd-settings-enable-geolocation

Bug 1002581 - Include new strings for enabling geolocation for Find My D...

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https://hg.mozilla.org/integration/gaia-central/rev/f4e00e07fa61
Author: Guilherme Goncalves <guilherme.p.gonc@gmail.com>
Desc: Bug 1002581 - Include new strings for enabling geolocation for Find My Device.
Bumping manifests a=b2g-bump