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

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https://hg.mozilla.org/integration/gaia-central/rev/aa012c91dbe0
Author: Rob Wood <rwood@mozilla.com>
Desc: Merge pull request #12592 from rwood-moz/endurance_device_codenames

Update endurance tests datazilla submission script; a=test-only

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https://hg.mozilla.org/integration/gaia-central/rev/69c8841682e5
Author: rwood-moz <rwood@mozilla.com>
Desc: Update endurance tests datazilla submission script; a=test-only