[MacPorts] #55766: pcb: Update to 4.1.0

[MacPorts]

#55766: pcb: Update to 4.1.0
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  Reporter:  technobauble  |      Owner:
      Type:  update        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  pcb           |
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Comment (by mf2k):

 I believe {{{size}}} is not documented yet. But you can see it used in,
 for example, the curl Portfile. This may be on git head only, but I
 initially set it to 1 and run the following to get the right value:

 {{{sudo port -v checksum [port]}}}

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Ticket URL: <https://trac.macports.org/ticket/55766#comment:3>
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