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

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https://hg.mozilla.org/integration/gaia-central/rev/ce8d9929df2a
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #24681 from crh0716/1036210

Bug 1036210 - Recover the automatic connection once the manual connecon is failed r=eragonj

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https://hg.mozilla.org/integration/gaia-central/rev/adb6473de5d1
Author: Arthur Chen <crh0716@gmail.com>
Desc: Bug 1036210 - Recover the automatic connection once the manual connection is failed

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https://hg.mozilla.org/integration/gaia-central/rev/a56cf66b5c79
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #24963 from KevinGrandon/bug_1080285_keyboard_test_mock_dimensions

Bug 1080285 - [Keyboard] Mock test dimensions so it will pass in any environment

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https://hg.mozilla.org/integration/gaia-central/rev/776c0552b706
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1080285 - [Keyboard] Mock test dimensions so it will pass in any environment r=rudyl
Bumping manifests a=b2g-bump