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

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https://hg.mozilla.org/integration/gaia-central/rev/d361e8c712c0
Author: Zbigniew Braniecki <gandalf@mozilla.com>
Desc: Revert 'Bug 1043496 - Default Image for Contacts When Image is Missing' due to Gu errors
Bumping manifests a=b2g-bump