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

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https://hg.mozilla.org/integration/gaia-2_0/rev/8ba6903b8a48
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Merge pull request #21287 from millermedeiros/1030552-all-day-l10n-2.0

Bug 1030552 - [Calendar] "All day" on month view is not localized for All day events r=gaye

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https://hg.mozilla.org/integration/gaia-2_0/rev/6c2c79f2a621
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Bug 1030552 - [Calendar] "All day" on month view is not localized for All day events
Bumping manifests a=b2g-bump