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

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https://hg.mozilla.org/integration/gaia-central/rev/22b7f213fa1c
Author: Jim Porter <jporter@mozilla.com>
Desc: Merge pull request #20702 from jimporter/ringtones-share-spinner

Bug 1018470 - [ringtones] show spinner for save activity

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https://hg.mozilla.org/integration/gaia-central/rev/32b2b6479199
Author: Jim Porter <jporter@mozilla.com>
Desc: Bug 1018470 - [ringtones] show spinner for save activity
Bumping manifests a=b2g-bump