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

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https://hg.mozilla.org/integration/gaia-central/rev/0419bc5e7438
Author: steveck-chung <schung@mozilla.com>
Desc: Merge pull request #25206 from steveck-chung/message-selection-module

Bug 1074732 - [Messages] Create a mixin to handle the select UI model. r=julienw

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https://hg.mozilla.org/integration/gaia-central/rev/bddf92763731
Author: Steve Chung <schung@mozilla.com>
Desc: Add lazyloader and unit test fix

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https://hg.mozilla.org/integration/gaia-central/rev/11cd8a86c021
Author: Steve Chung <schung@mozilla.com>
Desc: Expose select/unselect method and unit tests

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https://hg.mozilla.org/integration/gaia-central/rev/8452ad5d3454
Author: Steve Chung <schung@mozilla.com>
Desc: Bug 1074732 - [Messages] Create a mixin to handle the select UI model
Bumping manifests a=b2g-bump