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

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https://hg.mozilla.org/integration/gaia-central/rev/88b07f6e2a06
Author: Zbigniew Braniecki <gandalf@mozilla.com>
Desc: Bug 1043615 - Update the code that calls new L10n ID's. r=me
Bumping manifests a=b2g-bump