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

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https://hg.mozilla.org/integration/gaia-central/rev/0a26eafbba1c
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Revert "Merge pull request #20011 from borjasalguero/mobileid_ui"

This reverts commit 270a833e262dfbaf855cc6954d23a55f92c60db5, reversing
changes made to 131c5cce4afe158b1db0be58f980130ccc1ab34a.

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https://hg.mozilla.org/integration/gaia-central/rev/c9dfd4ce33e8
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Revert "Merge pull request #19559 from acperez/bug-1009633"

This reverts commit 8cee6e0e1b8037ec22c010399d7f2d06f3d9b0d2, reversing
changes made to 2cfd8e79ca6ee6bd163d3f4748e00af239cf2f23.
Bumping manifests a=b2g-bump