[MacPorts] #60587: LibreSSL update to v3.1.2

[MacPorts]

#60587: LibreSSL update to v3.1.2
---------------------+----------------------
 Reporter:  akierig  |      Owner:  (none)
     Type:  update   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:  2.6.2
 Keywords:           |       Port:  libressl
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 MacPorts currently provides LibreSSL 2.8.3 released 2018-12-15.

 The most recent stable version is 3.1.2 (released 2020-05-20)

 https://github.com/libressl-portable/portable

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Ticket URL: <https://trac.macports.org/ticket/60587>
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