Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-2_0/rev/f2091e56a430
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Revert "Merge pull request #21508 from millermedeiros/1002904-shared-icon-font"

This reverts commit 7bfb8969cc2c8d9dff1426848a499c13ac848cc7.
Bumping manifests a=b2g-bump