Bumping gaia.json for 8 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/7e56c88034ef
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #25748 from mancas/bug1091504_master

Bug 1091504 - [B2G][GAIA] STK: AP should not send TR for STK_CMD_REFRESH... r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/a334ac5d178a
Author: Manuel Casas <manuel.casasbarrado@telefonica.com>
Desc: Bug 1091504 - [B2G][GAIA] STK: AP should not send TR for STK_CMD_REFRESH. Patch v2.2

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https://hg.mozilla.org/integration/gaia-central/rev/880edfcc67bf
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #24608 from julienw/1075475-fix-costcontrol-tests

Bug 1075475 - [CostControl] Fix unit tests with a newer mocha r=salva r=salva

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https://hg.mozilla.org/integration/gaia-central/rev/53fa6ae5245a
Author: Julien Wajsberg <felash@gmail.com>
Desc: Follow-up: set the result in an asynchronous way

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https://hg.mozilla.org/integration/gaia-central/rev/b8bc84720644
Author: Julien Wajsberg <felash@gmail.com>
Desc: Fixed review comments

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https://hg.mozilla.org/integration/gaia-central/rev/4648393892d7
Author: Julien Wajsberg <felash@gmail.com>
Desc: Bug 1075475 - [CostControl] Fix unit tests with a newer mocha r=salva r=djf

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https://hg.mozilla.org/integration/gaia-central/rev/e49e3315203a
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #25698 from mancas/bug1091299

Bug 1091299 - It's possible to open the SMS activity menu multiple times. r=julienw

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https://hg.mozilla.org/integration/gaia-central/rev/567dcc6ac9dc
Author: Manuel Casas <manuel.casasbarrado@telefonica.com>
Desc: Bug 1091299 - It's possible to open the SMS activity menu multiple times
Bumping manifests a=b2g-bump