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

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https://hg.mozilla.org/integration/gaia-central/rev/318915a96a4a
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #16118 from viorelaioia/bug_970217

Bug 970217 - Unxfail test_settings_passcode.py as Bug 966476 is fixed

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https://hg.mozilla.org/integration/gaia-central/rev/7c81124ea89a
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 970217 - Unxfail test_settings_passcode.py as Bug 966476 is fixed
Bumping manifests a=b2g-bump