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

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https://hg.mozilla.org/integration/gaia-central/rev/164dccd55fe6
Author: gitmai <mri@tid.es>
Desc: Merge pull request #21520 from gitmai/bug-1032095-usage-message-with-sound

Bug 1032095 - Usage message with sound
r=salva

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https://hg.mozilla.org/integration/gaia-central/rev/358ee56adbfe
Author: mai <mri@tid.es>
Desc: Bug 1032095 - Usage message with sound
Bumping manifests a=b2g-bump