Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/83f55a3df442
Author: Gareth Aye <gaye@mozilla.com>
Desc: Add missing ` mark

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https://hg.mozilla.org/integration/gaia-central/rev/4a5285a476dc
Author: Gareth Aye <gaye@mozilla.com>
Desc: Merge pull request #20040 from gaye/add-interop-test-config

Add calendar interop test config r=self

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https://hg.mozilla.org/integration/gaia-central/rev/5c6e612f2419
Author: gaye <gaye@mozilla.com>
Desc: Add calendar interop test config
Bumping manifests a=b2g-bump