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

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https://hg.mozilla.org/integration/gaia-central/rev/cc0cc3a29b94
Author: Yura Zenevich <yura.zenevich@gmail.com>
Desc: Merge pull request #24147 from yzen/bug-1068202

Bug 1068202 - fixed cards view statusbar screen reader visibility. Added...

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https://hg.mozilla.org/integration/gaia-central/rev/f86a1c1e629b
Author: Yura Zenevich <yzenevich@mozilla.com>
Desc: Bug 1068202 - fixed cards view statusbar screen reader visibility. Added tests.
Bumping manifests a=b2g-bump