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

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https://hg.mozilla.org/integration/gaia-central/rev/967189a54803
Author: Mihai Cîrlănaru <mihai@cirlanaru.com>
Desc: Merge pull request #11871 from mcirlanaru/bug_911211

Bug 911211 - [Call Log] Remove DB upgrade code for version 5. r=@ferjm

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https://hg.mozilla.org/integration/gaia-central/rev/7042f849aaf0
Author: Mihai Cirlanaru <mihai@cirlanaru.com>
Desc: Bug 911211 - [Call Log] Remove DB upgrade code for version 5. r=ferjm