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

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https://hg.mozilla.org/integration/gaia-central/rev/b7cfc61acd43
Author: Min-Zhong "John" Lu <mnjul@users.noreply.github.com>
Desc: Merge pull request #20345 from mnjul/bug_1023534_lockscreen_pin_camera_icon_low

Bug 1023534 - [VsD Refresh] Lockscreen Visual Refresh > Pin code screen > Camera icon position

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https://hg.mozilla.org/integration/gaia-central/rev/9fe6f40369d4
Author: John Lu [:mnjul] <jlu@mozilla.com>
Desc: Bug 1023534 - [VsD Refresh] Lockscreen Visual Refresh > Pin code screen > Camera icon position

note: please land after bug 1023545 lands

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https://hg.mozilla.org/integration/gaia-central/rev/2f94dd45e27a
Author: Min-Zhong "John" Lu <mnjul@users.noreply.github.com>
Desc: Merge pull request #20335 from mnjul/bug_1023545_lockscreen_time_font_small

Bug 1023545 - [VsD Refresh] Lockscreen Visual Refresh > Time font is too small

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https://hg.mozilla.org/integration/gaia-central/rev/676ddd48fd4e
Author: John Lu [:mnjul] <jlu@mozilla.com>
Desc: Bug 1023545 - [VsD Refresh] Lockscreen Visual Refresh > Time font is too small

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https://hg.mozilla.org/integration/gaia-central/rev/4fcc319eb21e
Author: Min-Zhong "John" Lu <mnjul@users.noreply.github.com>
Desc: Merge pull request #20346 from mnjul/bug_1023448_lockscreen_notifications_color_overlay_brightness

Bug 1023448 - [VsD Refresh] Lockscreen Visual Refresh > Notifications background colour picker looks too light

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https://hg.mozilla.org/integration/gaia-central/rev/a8b23cbcb620
Author: John Lu [:mnjul] <jlu@mozilla.com>
Desc: Bug 1023448 - [VsD Refresh] Lockscreen Visual Refresh > Notifications background colour picker looks too light

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https://hg.mozilla.org/integration/gaia-central/rev/f6e585b5a3b6
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #20400 from KevinGrandon/bug_1021000_notification_style

Bug 1021000 - Notification icon slightly cut off at top left of screen

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https://hg.mozilla.org/integration/gaia-central/rev/e5ff2e351b9d
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1021000 - Notification icon slightly cut off at top left of screen r=timdream
Bumping manifests a=b2g-bump