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

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https://hg.mozilla.org/integration/gaia-central/rev/d9276059a6c4
Author: steveck-chung <schung@mozilla.com>
Desc: Merge pull request #17838 from SasikalaParuchuri/Bug_984841_Keyboard_NotShown_inNewmessageScreen

Bug 984841 - [Messages] The cursor and the keyboard are not shown when New message screen is opened r=schung

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https://hg.mozilla.org/integration/gaia-central/rev/36bd64bb3ce8
Author: sasikala.paruchuri <sasikala.paruchuri@lge.com>
Desc: Bug 984841 - [Messages] The cursor and the keyboard are not shown when New message screen is opened r=schung

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https://hg.mozilla.org/integration/gaia-central/rev/c533c6ed5362
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #17603 from mikehenrty/bug-975973-lite

Bug 975973 - [DSDS] The "data circle" icon is not made smaller for DSDS ...

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https://hg.mozilla.org/integration/gaia-central/rev/008e23607d80
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Bug 975973 - [DSDS] The "data circle" icon is not made smaller for DSDS configurations
Bumping manifests a=b2g-bump