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

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https://hg.mozilla.org/integration/gaia-central/rev/1ee8f4c86de4
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #16024 from jmcanterafonseca/fb_sync_fixed

Bug 952691 - [B2G][Contacts][Facebook Sync]Contacts imported from Facebo...

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https://hg.mozilla.org/integration/gaia-central/rev/543c71092e7d
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 952691 - [B2G][Contacts][Facebook Sync]Contacts imported from Facebook do not sync every 24 hours to reflect profile changes.
Bumping manifests a=b2g-bump