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

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https://hg.mozilla.org/integration/gaia-central/rev/d995823e80fa
Author: George <georgeiscoming@gmail.com>
Desc: Merge pull request #13433 from cctuan/935547

Bug 935547 - [Flatfish][System] wrong screen size after rebooting on homescreen

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https://hg.mozilla.org/integration/gaia-central/rev/d461cec2873c
Author: cctuan <georgeiscoming@gmail.com>
Desc: Bug 935547 - [Flatfish][System] wrong screen size after rebooting on homescreen