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

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https://hg.mozilla.org/integration/gaia-central/rev/c0982e09409f
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #19101 from jmcanterafonseca/move_facebook_import_js

Bug 989985 - [FTU-Separation] Move extra Facebook import modules to shar...

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https://hg.mozilla.org/integration/gaia-central/rev/b8b10806c747
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 989985 - [FTU-Separation] Move extra Facebook import modules to shared/js/contacts/import/facebook
Bumping manifests a=b2g-bump