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

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https://hg.mozilla.org/integration/gaia-central/rev/0dd72df9c46b
Author: Ran Ben Aharon <ran@everything.me>
Desc: Merge pull request #12429 from EverythingMe/bugfix-919409

Bug 919409 - [e.me][perf] Certain Collections show constant repaints [r=crdlc]

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https://hg.mozilla.org/integration/gaia-central/rev/7d27614c36a1
Author: Ran Ben Aharon <ran@ranbena.com>
Desc: Bug 919409 - [e.me][perf] Certain Collections show constant repaints [r=crdlc]

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https://hg.mozilla.org/integration/gaia-central/rev/a0ec6c37bf5e
Author: Ran Ben Aharon <ran@everything.me>
Desc: Merge pull request #12428 from EverythingMe/bugfix-919406

Bug 919406 - [e.me][perf] Panning fps reduced due Collection DOM [r=crdlc]

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https://hg.mozilla.org/integration/gaia-central/rev/7cc66d26413f
Author: Ran Ben Aharon <ran@ranbena.com>
Desc: Bug 919406 - [e.me][perf] Panning fps reduced due Collection DOM [r=crdlc]

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https://hg.mozilla.org/integration/gaia-central/rev/4bc78e0d6391
Author: Ran Ben Aharon <ran@everything.me>
Desc: Merge pull request #12430 from EverythingMe/bugfix-uuid

Bug 919547 - [e.me][perf] uuid.js replacement [r=crdlc]

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https://hg.mozilla.org/integration/gaia-central/rev/5aafb052e81b
Author: Evyatar Amitay <evyatron@gmail.com>
Desc: Bug 919547 - [e.me][perf] uuid.js replacement [r=crdlc]