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

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https://hg.mozilla.org/integration/gaia-central/rev/0d0bdb1375a9
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #14765 from crdlc/bug-951077

Bug 951077 - [Download Manager] if you try to open a file while the devi...

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https://hg.mozilla.org/integration/gaia-central/rev/1ff1f1f3547a
Author: crdlc <crdlc@tid.es>
Desc: Bug 951077 - [Download Manager] if you try to open a file while the device is connected as USB, the file is removed from the list