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

========

https://hg.mozilla.org/integration/gaia-central/rev/6b33ca9247cc
Author: Florin Strugariu <florin.strugariu@softvision.ro>
Desc: Merge pull request #23987 from viorelaioia/bug_1064228_unit_tests

Bug 1065995 - Disable tests affected by Bug 1064228

========

https://hg.mozilla.org/integration/gaia-central/rev/2b26d5d35bdb
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 1065995 - Disable tests affected by Bug 1064228
Bumping manifests a=b2g-bump