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

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https://hg.mozilla.org/integration/gaia-central/rev/06165bc5eae2
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Merge pull request #20062 from pivanov/bug-1019220

Bug 1019220 - Settings Icons need improvements

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https://hg.mozilla.org/integration/gaia-central/rev/50badd5ed18b
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Bug 1019220 - Settings Icons need improvements
Bumping manifests a=b2g-bump