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

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https://hg.mozilla.org/integration/gaia-central/rev/eb9eb2e3bc6a
Author: chirarobert <robert.chira@softvision.ro>
Desc: Merge pull request #22629 from viorelaioia/bug-1040063

Bug 1040063 - [v2.1][v2.0] Intermittent test_settings_do_not_track.py fa...

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https://hg.mozilla.org/integration/gaia-central/rev/a5dd10af2fdc
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 1040063 - [v2.1][v2.0] Intermittent test_settings_do_not_track.py failure
Bumping manifests a=b2g-bump