[MacPorts] #33067: LinkChecker: Update to 7.6

[MacPorts]

#33067: LinkChecker: Update to 7.6
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 Reporter:  charlie.clark@…                    |       Owner:  mww@…           
     Type:  update                             |      Status:  new             
 Priority:  Normal                             |   Milestone:                  
Component:  ports                              |     Version:                  
 Keywords:  haspatch                           |        Port:  linkchecker     
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Comment(by charlie.clark@…):

 Sorry for the duplicate but nothing was happening on this ticket.

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Ticket URL: <https://trac.macports.org/ticket/33067#comment:6>
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