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

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https://hg.mozilla.org/integration/gaia-central/rev/36dcb52aae01
Author: Ben Francis <ben@tola.me.uk>
Desc: Merge pull request #15121 from benfrancis/957731

Bug 957731 - Made wrapper content OOP again r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/b8d2add4ee2b
Author: Ben Francis <ben@tola.me.uk>
Desc: Bug 957731 - Made wrapper content OOP again