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

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https://hg.mozilla.org/integration/gaia-central/rev/44a6401e863f
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #23668 from TheoChevalier/messaging-settings-hardcoded

Bug 1062197 - Fix hardcoded strings in Messaging settings

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https://hg.mozilla.org/integration/gaia-central/rev/66b02e087d57
Author: TheoChevalier <theo.chevalier11@gmail.com>
Desc: Bug 1062197 - Fix hardcoded strings in Messaging settings

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https://hg.mozilla.org/integration/gaia-central/rev/24411b2da0be
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #23652 from TheoChevalier/bug1062007-HUD-l10n

Bug 1062007 - "Developer HUD" header is not localized anymore

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https://hg.mozilla.org/integration/gaia-central/rev/7d0f885ae5b6
Author: TheoChevalier <theo.chevalier11@gmail.com>
Desc: Bug 1062007 - "Developer HUD" header is not localized anymore
Bumping manifests a=b2g-bump