Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/9b27ea11e17d
Author: Ian Liu <iliu@mozilla.com>
Desc: Merge pull request #25320 from ian-liu/settings/bug1085290_bluetooth_support_version_detection_for_bluetooth_module/panel_between_v1/v2_api

Bug 1085290 - [Bluetooth][Settings] Support version detection for Bluetooth module/panel between v1/v2 API, r=arthur

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https://hg.mozilla.org/integration/gaia-central/rev/61a24840d47c
Author: ian-liu <iliu@mozilla.com>
Desc: Bug 1085290 - [Bluetooth][Settings] Support version detection for Bluetooth module/panel between v1/v2 API

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https://hg.mozilla.org/integration/gaia-central/rev/891103e2957b
Author: Florin Strugariu <florin.strugariu@softvision.ro>
Desc: Merge pull request #25575 from viorelaioia/bug1083217

Bug 1083217 - Add a test to play a song in artist list view

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https://hg.mozilla.org/integration/gaia-central/rev/d1cc60f7a218
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 1083217 - Add a test to play a song in artist list view
Bumping manifests a=b2g-bump