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

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https://hg.mozilla.org/integration/gaia-central/rev/1f59e11d5c22
Author: Jim Porter <jporter@mozilla.com>
Desc: Merge pull request #20504 from jimporter/ringtones-hide-share-from-self

Bug 1015513 - [ringtones] An app shouldn't be able to pick itself when l...

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https://hg.mozilla.org/integration/gaia-central/rev/3bf71b44ef20
Author: Jim Porter <jporter@mozilla.com>
Desc: Bug 1015513 - [ringtones] An app shouldn't be able to pick itself when launching an activity
Bumping manifests a=b2g-bump