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

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https://hg.mozilla.org/integration/gaia-central/rev/210585c28131
Author: Zac <zcampbell@mozilla.com>
Desc: Merge pull request #24826 from chirarobert/update_ftu

Bug 1065933 - Capture crash report for intermittent crash in test_ftu_wi...

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https://hg.mozilla.org/integration/gaia-central/rev/402e744d67ed
Author: Robert Chira <robertchira@P5075.(none)>
Desc: Bug 1065933 - Capture crash report for intermittent crash in test_ftu_with_tour
Bumping manifests a=b2g-bump