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

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https://hg.mozilla.org/integration/gaia-2_1/rev/8e5de00fdfa9
Author: viorelaioia <viorela.ioia@softvision.ro>
Desc: Merge pull request #24079 from chirarobert/fix_geo_2.1

Bug 1066611 - [v2.2] Fix test_geolocation_prompt

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https://hg.mozilla.org/integration/gaia-2_1/rev/5a511463fd16
Author: Robert Chira <robertchira@P5075.(none)>
Desc: Bug 1066611 - [v2.2] Fix test_geolocation_prompt
Bumping manifests a=b2g-bump