[MacPorts] #48773: Update py-mitmproxy to 0.13

[MacPorts]

#48773: Update py-mitmproxy to 0.13
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 Reporter:  macports@…  |      Owner:  macports-tickets@…
     Type:  update      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:
 Keywords:  haspatch    |       Port:  py-mitmproxy
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 Port py-mitmproxy needs to be updated to 0.13.

 Before committing this patch, this ticket depends on:
 - #48771: Update py-netlib to 0.13.[[br]]This ticket also depends on:
  - #48769: Update py-openssl to 0.15.1
  - #48770: Add port py-hpack
 - #48772: Update py-urwid to 1.3.0

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Ticket URL: <https://trac.macports.org/ticket/48773>
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