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

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https://hg.mozilla.org/integration/gaia-1_4/rev/bfd7af743d21
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Merge pull request #20603 from comoyo/revert1003045

Revert "Bug 1003045 - hide 'Sharing using USB' toggle if the storage isn't"

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https://hg.mozilla.org/integration/gaia-1_4/rev/95feda74b8c3
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Revert "Bug 1003045 - hide 'Sharing using USB' toggle if the storage isn't"

This reverts commit cf0a961f62f36b38af86f8a27b7bfc642b86e3ac.
Bumping manifests a=b2g-bump