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

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https://hg.mozilla.org/integration/gaia-central/rev/16366dfa0ad8
Author: Fernando Jiménez Moreno <ferjmoreno@gmail.com>
Desc: Merge pull request #23855 from empoalp/bug_1064807

Bug 1064807 - In multicall the sound alert for new SMS does not beep. r=etienne

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https://hg.mozilla.org/integration/gaia-central/rev/5bbb4b007fe4
Author: David Garcia <davidg@tid.es>
Desc: Bug 1064807 - In multicall the sound alert for new SMS does not beep r=etienne
Bumping manifests a=b2g-bump