Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/aba68f3a1ed3
Author: Wilson Page <wilsonpage@me.com>
Desc: Merge pull request #22673 from wilsonpage/1050541

Bug 1050541 - [Camera] HDR and timer icons don't display correctly

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https://hg.mozilla.org/integration/gaia-central/rev/ad30e9984ab0
Author: Wilson Page <wilsonpage@me.com>
Desc: Bug 1050541 - [Camera] HDR and timer icons don't display correctly

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https://hg.mozilla.org/integration/gaia-central/rev/2bf83acac5b0
Author: Jan Keromnes <janx@linux.com>
Desc: Merge pull request #22526 from jankeromnes/disabled

Bug 1033392 - [Settings] Factor out .disabled class, use in HUD. r=21,eragonj

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https://hg.mozilla.org/integration/gaia-central/rev/a954bdf351d6
Author: janx <janx@linux.com>
Desc: Bug 1033392 - [Settings] Factor out .disabled class, use in HUD. r=21,eragonj
Bumping manifests a=b2g-bump