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

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https://hg.mozilla.org/integration/gaia-central/rev/39d1b7efcc13
Author: pacorampas <b.frv@tid.es>
Desc: Merge pull request #22719 from pacorampas/907700

Bug 907700 - [HD][Usage] Update subtext r=mri

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https://hg.mozilla.org/integration/gaia-central/rev/c7c9f7331001
Author: Paco Rampas <pacorampas@gmail.com>
Desc: Bug 907700 - [HD][Usage] Update subtext

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https://hg.mozilla.org/integration/gaia-central/rev/6a4668bc2e4a
Author: BavarianTomcat <tomcat@mozilla.com>
Desc: Revert "Bug 990047 - Add a shared function to load JSON files and use it throughout gaia to replace the existing ad-hoc functions" for gaia unit test failures

This reverts commit 75d11a3dbf561b99bfce65a9822f2809cd91022e.

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https://hg.mozilla.org/integration/gaia-central/rev/591c2db0eb0a
Author: gitmai <mri@tid.es>
Desc: Merge pull request #23631 from vsireesha246/Bug_1061658_Datalimit_dialog_Changes

[Costcontrol]Bug 1061658 - [Costcontrol]Datalimit is in Red color and Done button is ... r=salva

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https://hg.mozilla.org/integration/gaia-central/rev/b03c59994a99
Author: varada.sireesha <varada.sireesha@lge.com>
Desc: Bug 1061658 - [Costcontrol]Datalimit is in Red color and Done button is disabled
Bumping manifests a=b2g-bump