Bumping gaia.json for 5 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-2_1/rev/9c89a6592352
Author: Eli Perelman <eli@eliperelman.com>
Desc: Bug 1072231 - Adjusting height of generic dialogs to compensate for SHB r=etienne

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https://hg.mozilla.org/integration/gaia-2_1/rev/530e8d161754
Author: Ghislain 'Aus' Lacroix <aus@mozilla.com>
Desc: bug 1062136 - getScreenshot should check for frontWindow. r=alive

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https://hg.mozilla.org/integration/gaia-2_1/rev/b1d2bdb3a93e
Author: EragonJ <eragonj@eragonj.me>
Desc: Bug 1061621 - When creating screen lock passcode, passcode doesn't matched.

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https://hg.mozilla.org/integration/gaia-2_1/rev/28b01987c037
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1071942 - Do not hide statusbar opacity when rocketbar is focused r=alive

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https://hg.mozilla.org/integration/gaia-2_1/rev/f616f5dc7b6d
Author: Manuel Casas Barrado <manuel.casasbarrado@telefonica.com>
Desc: Bug 1065062 - [Settings][Downloads] 'Select/Deselect All' buttons are missing from Downloads Edit page. r=arthur.chen

Conflicts:
	apps/settings/test/unit/downloads_list_test.js
Bumping manifests a=b2g-bump