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

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https://hg.mozilla.org/integration/gaia-central/rev/929e27d8a47a
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Merge pull request #18176 from arcturus/bug-993406

Bug 993406 - [Contacts][unit test] Follow up 909201: Add unit test to search view when a contacts change

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https://hg.mozilla.org/integration/gaia-central/rev/fddfb007541e
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Bug 993406 - [Contacts][unit test] Follow up 909201: Add unit test to search view when a contacts change
Bumping manifests a=b2g-bump