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

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https://hg.mozilla.org/integration/gaia-2_0/rev/d3ff3672ece5
Author: viorelaioia <viorela.ioia@softvision.ro>
Desc: Merge pull request #24993 from viorelaioia/bug_1072343_v2.0

Bug 1072343 - Improve wait in test_camera_flash_modes.py

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https://hg.mozilla.org/integration/gaia-2_0/rev/34407f51ad44
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 1072343 - Improve wait in test_camera_flash_modes.py
Bumping manifests a=b2g-bump