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

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https://hg.mozilla.org/integration/gaia-central/rev/0bfd8f0e9f4a
Author: gasolin <gasolin@gmail.com>
Desc: Merge pull request #11944 from gasolin/issue-887669

Bug 887669 - [Test][System] Unit test for Permission Manager, r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/e7417792693e
Author: gasolin <gasolin@gmail.com>
Desc: Bug 887669 - [Test][System] Unit test for Permission Manager