Bumping gaia.json for 8 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/383735049e86
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #21846 from svic/Bug_1039239

Bug 1039239 - Better NFC handover error handling

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https://hg.mozilla.org/integration/gaia-central/rev/b40b6117be3e
Author: Arno Puder <arno@puder.org>
Desc: Bug 1039239 - Better NFC handover error handling

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https://hg.mozilla.org/integration/gaia-central/rev/8eba7c0e50e3
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #21837 from guilherme-pg/bug1034088-offline

Bug 1034088 - Display the proper Settings panel for Find My Device when offline.

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https://hg.mozilla.org/integration/gaia-central/rev/a57845e709a3
Author: Guilherme Goncalves <guilherme.p.gonc@gmail.com>
Desc: Bug 1034088 - Display the proper Settings panel for Find My Device when offline.

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https://hg.mozilla.org/integration/gaia-central/rev/627a576d2058
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #21688 from flodolo/bug892700

Bug 892700 - Display Developer options on 2 lines if necessary

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https://hg.mozilla.org/integration/gaia-central/rev/d6fe3b318ec0
Author: Francesco Lodolo (:flod) <flod@lodolo.net>
Desc: Bug 892700 - Display Developer options on 2 lines if necessary

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https://hg.mozilla.org/integration/gaia-central/rev/70edf8c17539
Author: Andrew Halberstadt <halbersa@gmail.com>
Desc: Merge pull request #21888 from ahal/python_service

Create a python runner service to run integration tests on device

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https://hg.mozilla.org/integration/gaia-central/rev/ff1e44c2f817
Author: Andrew Halberstadt <halbersa@gmail.com>
Desc: Bug 994847 - Create a python runner service for integration tests, r=mdas
Bumping manifests a=b2g-bump