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

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https://hg.mozilla.org/integration/gaia-central/rev/40471bfa7ae5
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #17151 from chirarobert/xfail_test_dialer_find_contact

Bug 983088 - Xfail test_dialer_find_contact with Bug 983054

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https://hg.mozilla.org/integration/gaia-central/rev/925e5c16f2e3
Author: chirarobert <robert.chira@softvision.ro>
Desc: Bug 983088 - Xfail test_dialer_find_contact with Bug 983054
Bumping manifests a=b2g-bump