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

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https://hg.mozilla.org/integration/gaia-central/rev/0ef6cfcb0ecc
Author: Ismael González <ismael@basiclines.com>
Desc: Merge pull request #11479 from basiclines/value-selectors-to-shared

Bug 870747 - Move value selector BB files out of system app, r=@alivedise

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https://hg.mozilla.org/integration/gaia-central/rev/eded4ef1617a
Author: basiclines <igonzaleznicolas@gmail.com>
Desc: Bug 870747 - Move value selector BB files out of system app