Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/236aa768af7a
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Revert "Revert "Merge pull request #20353 from timdream/input-switch-flash""

This reverts commit 6ba0bc68738f70edc42d496cfede5ea09af334d4.
Bumping manifests a=b2g-bump