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

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https://hg.mozilla.org/integration/gaia-central/rev/01b75abeb3a7
Author: Ghislain 'Aus' Lacroix <aus@noiseport.org>
Desc: Merge pull request #21932 from nullaus/bug1038167

bug 1038167 - Add 84x84 icons.

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https://hg.mozilla.org/integration/gaia-central/rev/58a99f37bd0a
Author: Ghislain 'Aus' Lacroix <aus@mozilla.com>
Desc: * actually add 84x84 icons.
Bumping manifests a=b2g-bump