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

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https://hg.mozilla.org/integration/gaia-central/rev/ce46df1367d0
Author: gitmai <mri@tid.es>
Desc: Merge pull request #20599 from gitmai/bug-1020731-folloup-test-bug-1019954

Bug 1020731 - [Contacts] Follow up 1019954: Add unit test to Importing t...
r=jmcf

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https://hg.mozilla.org/integration/gaia-central/rev/02b5ae421166
Author: mai <mri@tid.es>
Desc: Bug 1020731 - [Contacts] Follow up 1019954: Add unit test to Importing then deleting contacts from Outlook/Gmail reports negative number of contacts found
Bumping manifests a=b2g-bump