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

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https://hg.mozilla.org/integration/gaia-central/rev/f30fdc965a32
Author: James Lal <james@lightsofapollo.com>
Desc: Merge pull request #20911 from lightsofapollo/1029280

Bug 1029280 - Ensure app icon is updated if the path changed.

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https://hg.mozilla.org/integration/gaia-central/rev/31d46c2af8d5
Author: James Lal <james@lightsofapollo.com>
Desc: Bug 1029280 - Ensure app icon is updated if the path changed.
Bumping manifests a=b2g-bump