Bumping gaia.json for 6 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/8a5b2c90d4b1
Author: gasolin <gasolin@gmail.com>
Desc: Merge pull request #20466 from gasolin/issue-1024828

Bug 1024828 - [permission] there's a blank line between permission dialo..., r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/92369bac4598
Author: gasolin <gasolin@gmail.com>
Desc: Bug 1024828 - [permission] there's a blank line between permission dialog and soft button

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https://hg.mozilla.org/integration/gaia-central/rev/b11a5fc3375a
Author: gasolin <gasolin@gmail.com>
Desc: Merge pull request #20467 from gasolin/issue-1022908

Bug 1022908 - [B2G][Flame][Browser] Camera and microphone permissions ar..., r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/4d894ecbeaf4
Author: gasolin <gasolin@gmail.com>
Desc: Bug 1022908 - [B2G][Flame][Browser] Camera and microphone permissions are truncated

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https://hg.mozilla.org/integration/gaia-central/rev/4cda5c99bbfc
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Merge pull request #20006 from pivanov/bug-1020010

Bug 1020010 - [flame][gallery] [video] fuzzy icons

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https://hg.mozilla.org/integration/gaia-central/rev/8dea7c1938d8
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Bug 1020010 - [flame][gallery] [video] fuzzy icons
Bumping manifests a=b2g-bump