[MacPorts] #60826: py-molmod: Update to 1.4.8

[MacPorts]

#60826: py-molmod: Update to 1.4.8
------------------------+-----------------------
 Reporter:  ryandesign  |      Owner:  tczorro
     Type:  update      |     Status:  assigned
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:
 Keywords:              |       Port:  py-molmod
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 molmod 1.4.8 is available; the py-molmod port could be updated.

 Its livecheck should also be fixed because it currently doesn't work.

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Ticket URL: <https://trac.macports.org/ticket/60826>
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