Bumping gaia.json for 4 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/09fa7e452deb
Author: Julien Wajsberg <felash@gmail.com>
Desc: Revert "Merge pull request #13663 from gtorodelvalle/contacts-bug-937040-removing-and-saving-mozContacts"

This reverts commit c434a0ab2cf2884b495cea385d982f760fd39e81, reversing
changes made to 603f7e0d23f2b693f17fce61ffcdc641a3a6aba6.

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https://hg.mozilla.org/integration/gaia-central/rev/2cb6bb07e26e
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #13675 from KevinGrandon/bug_935307_contacts_testing

 Bug 935307 - Tailor contact tests for animations r=gtorodelvalle

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https://hg.mozilla.org/integration/gaia-central/rev/8b463e937ecd
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 935307 - Tailor contact tests for animations

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https://hg.mozilla.org/integration/gaia-central/rev/cc9bb0801629
Author: Germán Toro del Valle <gtorodelvalle@gmail.com>
Desc: Bug 935307 - [B2G][Contacts] A user is able to retrieve a contact information from Settings screen