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

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https://hg.mozilla.org/integration/gaia-central/rev/705af28e0a6a
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #21551 from TheoChevalier/bug-1036102-calendar-switch-overlapp

Bug 1036102 - [B2G][2.0][Calendar] The change to a toggle for All day events causes overlap on many languages

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https://hg.mozilla.org/integration/gaia-central/rev/cd2b54ccf3f2
Author: TheoChevalier <theo.chevalier11@gmail.com>
Desc: Bug 1036102 - [B2G][2.0][Calendar] The change to a toggle for All day events causes overlap on many languages
Bumping manifests a=b2g-bump