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

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https://hg.mozilla.org/integration/gaia-central/rev/32c4c785e4b1
Author: Douglas Sherk <github@sherk.me>
Desc: Merge pull request #24909 from DouglasSherk/1077331-system-call-vibrate

Bug 1077331 - Only seek ringtone back to start on ringtone if the file is loaded fully enough to seek. r=etienne

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https://hg.mozilla.org/integration/gaia-central/rev/75e99a7c5d01
Author: Doug Sherk <github@sherk.me>
Desc: Bug 1077331 - Only seek ringtone back to start on ringtone if the file is loaded fully enough to seek. r=etienne
Bumping manifests a=b2g-bump