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

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https://hg.mozilla.org/integration/gaia-central/rev/afdc134ec6c5
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Merge pull request #23629 from arcturus/bug-1061413

Bug 1061413 - [Contacts] Favorites on top of ICE if ICE set first, and Favorites set later r=sergi

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https://hg.mozilla.org/integration/gaia-central/rev/a5d8cd669f14
Author: Francisco Jordano <arcturus@ardeenelinfierno.com>
Desc: Bug 1061413 - [Contacts] Favorites on top of ICE if ICE set first, and Favorites set later
Bumping manifests a=b2g-bump