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

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https://hg.mozilla.org/integration/gaia-central/rev/344d1f2de187
Author: gasolin <gasolin@gmail.com>
Desc: Merge pull request #23356 from gasolin/issue-1059135

Bug 1059135 - Transfer Protocol header is not localized/localizable, r=eragon

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https://hg.mozilla.org/integration/gaia-central/rev/0cb2ecd307f1
Author: gasolin <gasolin@gmail.com>
Desc: Bug 1059135 - Transfer Protocol header is not localized/localizable

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https://hg.mozilla.org/integration/gaia-central/rev/84d4535d26d4
Author: Sam Foster <sam@sam-i-am.com>
Desc: Merge pull request #23384 from sfoster/bug-1047143-active-app

Bug 1047143 - close apps entering task-manager, exitToApp to open/restore. r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/244216314207
Author: Sam Foster <sfoster@mozilla.com>
Desc: Bug 1047143 - close aps entering task-manager, exitToApp to open/restore. r=alive

* Fix assumption that home event means homescreen opens in SoundManager,
* Remove appwillopen handler in AttentionScreen, applaunch will suffice
* Also listen for search app's requestforeground event
Bumping manifests a=b2g-bump