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

========

https://hg.mozilla.org/integration/gaia-central/rev/6d6616ab0289
Author: chirarobert <robert.chira@softvision.ro>
Desc: Merge pull request #23080 from viorelaioia/bug_1055055

Bug 1055055 - Remove hack in cell_data_prompt.py page object.

========

https://hg.mozilla.org/integration/gaia-central/rev/1f317d523b8c
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 1055055 - Remove hack in cell_data_prompt.py page object.
Bumping manifests a=b2g-bump