Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/49143a92bd20
Author: Jan Keromnes <janx@linux.com>
Desc: Merge pull request #26540 from jankeromnes/hidedebugging

Bug 1097166 - Allow debugging icon to be hidden. r=mhenretty

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https://hg.mozilla.org/integration/gaia-central/rev/d07a6478f5a5
Author: Jan Keromnes <janx@linux.com>
Desc: Bug 1097166 - Allow debugging icon to be hidden. r=mhenretty

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https://hg.mozilla.org/integration/gaia-central/rev/5d1201051046
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Revert "Merge pull request #26332 from ochameau/customOrigin"

This reverts commit e3ab9dceeb7db02e57c9b44558cc54fb552a297b, reversing
changes made to 1c89a60723ae27e6eb6d3f7aeeca5efbf4c9beb5.
Bumping manifests a=b2g-bump