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

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https://hg.mozilla.org/integration/gaia-central/rev/d7c77807feb0
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #21461 from guilherme-pg/bug1035321-handle-accuracy

Bug 1035321 - Send the accuracy of locations to Find My Device's server.

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https://hg.mozilla.org/integration/gaia-central/rev/e4dea2e018dc
Author: Guilherme Goncalves <guilherme.p.gonc@gmail.com>
Desc: Bug 1035321 - Send the accuracy of positions to Find My Device's server.

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https://hg.mozilla.org/integration/gaia-central/rev/4a41159ba85b
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Merge pull request #21591 from etiennesegonzac/bug-1034347-bis

Bug 1034347 follow up - Fixing over paint issues r=21

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https://hg.mozilla.org/integration/gaia-central/rev/370d06eab414
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Bug 1034347 follow up - Fixing over paint issues
While making sure
* we're not continuously creating/destroying layers during an edge gesture
* we don't reflow while quickly swiping through apps

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https://hg.mozilla.org/integration/gaia-central/rev/005424e6e775
Author: Julien Wajsberg <felash@gmail.com>
Desc: Merge pull request #21613 from julienw/1033221-update-mozilla-download

Bug 1033221 - make mozilla-download and mozilla-get-url timeout in case ...

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https://hg.mozilla.org/integration/gaia-central/rev/f9f04e06632c
Author: Julien Wajsberg <felash@gmail.com>
Desc: Bug 1033221 - make mozilla-download and mozilla-get-url timeout in case the FTP server doesn't answer r=me

Bump the version for mozilla-download

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https://hg.mozilla.org/integration/gaia-central/rev/46a30986a7a6
Author: Douglas Sherk <github@sherk.me>
Desc: Merge pull request #21355 from gtorodelvalle/callscreen-bug-1018283-lockscreen-visual-refresh-revolutions

Bug 1018283 - [Follow-up 951665] Pending visual revision and adjustments callscreen-bug-1018283-lockscreen-visual-refresh-revolutions

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https://hg.mozilla.org/integration/gaia-central/rev/f839ca378e60
Author: German Toro del Valle <gtorodelvalle@gmail.com>
Desc: Bug 1018283 - [Follow-up 951665] Pending visual revision and adjustments of the VR call screen when in lockscreen
Bumping manifests a=b2g-bump