Bumping gaia.json for 6 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/b508914e27b3
Author: gasolin <gasolin@gmail.com>
Desc: Merge pull request #24664 from gasolin/issue-1072811

Bug 1072811 - [Bluetooth] BluetoothHelper APIv2 support, r=Ian

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https://hg.mozilla.org/integration/gaia-central/rev/7967028b0c01
Author: gasolin <gasolin@gmail.com>
Desc: Bug 1072811 - [Bluetooth] BluetoothHelper APIv2 support

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https://hg.mozilla.org/integration/gaia-central/rev/1c1c7609c7ed
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #25436 from janus926/bug-1087905

Bug 1089705 - Limit the scope of sound_manager.css to avoid affecting #w. r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/f540aa287ba9
Author: Ting-Yu Chou <janus926@gmail.com>
Desc: Bug 1089705 - Limit the scope of sound_manager.css to avoid affecting #windows div with :nth-last-child(). r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/7409e6732b20
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #25371 from EdgarChen/bug_1085313/refactor_card_lock_error

Bug 1085313 - [Gaia] Refactor the error handler for icc.{set|unlock}CardLock API. r=ejchen

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https://hg.mozilla.org/integration/gaia-central/rev/b6466661db38
Author: Edgar Chen <echen@mozilla.com>
Desc: Bug 1085313 - Refactor the error handler for icc.{set|unlock}CardLock API. r=ejchen,alive,sfoster
Bumping manifests a=b2g-bump