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

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https://hg.mozilla.org/integration/gaia-central/rev/33d42463b1b6
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #15895 from KevinGrandon/bug_956064_disable_intermittent_today_item

Bug 956064 - Disable failint intermittent test

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https://hg.mozilla.org/integration/gaia-central/rev/454a46dea5c0
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 956064 - Disable failing intermittent test
Bumping manifests a=b2g-bump