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

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https://hg.mozilla.org/integration/gaia-central/rev/b629b7b189a1
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #23553 from ADLR-es/fix-bug-947352

Bug 947352 - [B2G][Contacts] Magnifying glass search icon on scroll list...

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https://hg.mozilla.org/integration/gaia-central/rev/2061f35f308b
Author: Adrián de la Rosa <hola@adlr.es>
Desc: Bug 947352 - [B2G][Contacts] Magnifying glass search icon on scroll list in contacts app does not function
Bumping manifests a=b2g-bump