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

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https://hg.mozilla.org/integration/gaia-central/rev/b2992503c1c8
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #22564 from ADLR-es/fix-bug-1048141

Bug 1048141 - [v2.1] After importing contact from gmail the import screen does not disappear

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https://hg.mozilla.org/integration/gaia-central/rev/195f5ea80ef5
Author: Adrián de la Rosa <hola@adlr.es>
Desc: Bug 1048141 - [v2.1] After importing contact from gmail the import screen does not disappear
Bumping manifests a=b2g-bump