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

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https://hg.mozilla.org/integration/gaia-central/rev/eb5962f388ec
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #22000 from guilherme-pg/bug1041591-can-disable-logout

Bug 1041591 - Don't set 'findmydevice.can-disable' if not registered on ...

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https://hg.mozilla.org/integration/gaia-central/rev/c3662fd49610
Author: Guilherme Goncalves <guilherme.p.gonc@gmail.com>
Desc: Bug 1041591 - Don't set 'findmydevice.can-disable' if not registered on logout.
Bumping manifests a=b2g-bump