Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/1edc393a4af0
Author: Zac <zcampbell@mozilla.com>
Desc: Revert "Revert "Bug 1033975 - Resolve Python suite crash handling""

This reverts commit bc16638fff952754efbdfd6f84b8e068c12b4f6f.
Bumping manifests a=b2g-bump