[MacPorts] #46647: update rcs to 5.9.3

[MacPorts]

#46647: update rcs to 5.9.3
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 Reporter:  michael.bryniarski@…  |      Owner:  macports-tickets@…
     Type:  update                |     Status:  new
 Priority:  Normal                |  Milestone:
Component:  ports                 |    Version:  2.3.3
 Keywords:                        |       Port:  rcs
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 RCS has been updated to 5.9.3: https://www.gnu.org/software/rcs/rcs.html

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Ticket URL: <https://trac.macports.org/ticket/46647>
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