Bumping gaia.json for 5 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-2_0/rev/663b7deb3f2a
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #20943 from millermedeiros/1016687-toggle-calendar-v2.0

Bug 1016687 - [B2G][Calendar] - Event icons / indicators (dots below the date) are still visible in month view after disabling offline calendar r=RyanVM

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https://hg.mozilla.org/integration/gaia-2_0/rev/6c8df2f326aa
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Bug 1016687 - [B2G][Calendar] - Event icons / indicators (dots below the date) are still visible in month view after disabling offline calendar

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https://hg.mozilla.org/integration/gaia-2_0/rev/c552a6881b9f
Author: Julien Wajsberg <felash@gmail.com>
Desc: Bug 1007519: disable toggle_calendar_test.js again on Travis r=me

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https://hg.mozilla.org/integration/gaia-2_0/rev/3d24f117a457
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Merge pull request #20102 from millermedeiros/1007519-toggle-calendar-test

Bug 1007519 - Perma failing test, toggle calendar r=gaye

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https://hg.mozilla.org/integration/gaia-2_0/rev/d5396d2f7587
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #20037 from yglazko/fmd_erase_fix

Bug 1020580 Proposed Fix for FMD Erase Not Working
Bumping manifests a=b2g-bump