[MacPorts] #60200: jfreechart: update to 1.5.0

[MacPorts]

#60200: jfreechart: update to 1.5.0
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 Reporter:  chrstphrchvz  |      Owner:  (none)
     Type:  update        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:
 Keywords:                |       Port:  jfreechart
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 Port was last updated to 1.0.0-pre2 in 2005. Latest upstream release is
 1.5.0 (released in 2017).

 Port currently depends on EOL port `servlet24-api`: #58389

 Port also has fallback dependency on deprecated port `kaffe`; if the port
 is to be kept, it should instead use the Java portgroup.

 (I personally do not need this port, and have considered removing it,
 starting by proposing to remove its only dependent `statcvs`:
 https://github.com/macports/macports-ports/pull/6605)

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Ticket URL: <https://trac.macports.org/ticket/60200>
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