Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/8d7fc43eeb20
Author: Marina <mri@tid.es>
Desc: Merge pull request #24804 from vsireesha246/Bug_1074061_Usage_Toggle_Buttons_Change

[Costcontrol]Bug 1074061-Text and checkbox is shown so transparent r=mai

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https://hg.mozilla.org/integration/gaia-central/rev/a562e0974cf1
Author: varada.sireesha <varada.sireesha@lge.com>
Desc: Bug 1074061 - [Costcontrol]Text and checkbox is shown so transparent
Bumping manifests a=b2g-bump