[MacPorts] #60199: sphinx4: update to 5prealpha

[MacPorts]

#60199: sphinx4: update to 5prealpha
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 Reporter:  chrstphrchvz  |      Owner:  (none)
     Type:  update        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:
 Keywords:                |       Port:  sphinx4
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 Upstream project recommends using the latest release, 5prealpha (released
 in 2016).

 There has also since been occasional development on the project's GitHub
 repository: https://github.com/cmusphinx/sphinx4

 The upstream project's homepage also suggests using its newer Vosk/Kaldi
 libraries instead.

 If this port is kept, it should be migrated to the Java portgroup and have
 its fallback dependency on deprecated port `kaffe` removed.

 (I personally do not need this port.)

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Ticket URL: <https://trac.macports.org/ticket/60199>
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