[MacPorts] #50150: libuv: update to 1.8.0, fix livecheck or use github

[MacPorts]

#50150: libuv: update to 1.8.0, fix livecheck or use github
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 Reporter:  mojca@…  |      Owner:  raimue@…
     Type:  update   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:
 Keywords:           |       Port:  libuv
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 I would like to request an upgrade of libuv, potentially using the `github
 PortGroup` (the livecheck is broken at the moment).

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Ticket URL: <https://trac.macports.org/ticket/50150>
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