[MacPorts] #56948: Update LaTeXML to version 0.8.3

[MacPorts]

#56948: Update LaTeXML to version 0.8.3
-------------------------+---------------------
 Reporter:  brucemiller  |      Owner:  (none)
     Type:  update       |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:
 Keywords:               |       Port:  LaTeXML
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 LaTeXML has released version 0.8.3; this ticket requests updating the
 Portfile for that version.
 This might be of interest to @mojca.

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Ticket URL: <https://trac.macports.org/ticket/56948>
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