[MacPorts] #54256: grc: update to version 1.11.1 and add python 3 variants

[MacPorts]

#54256: grc: update to version 1.11.1 and add python 3 variants
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 Reporter:  1-61803      |      Owner:
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:
 Keywords:               |       Port:  grc
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 https://github.com/garabik/grc/releases/tag/v1.11.1

 See previous #54054. The dev told me that `python27` is still supported.

 I left the conflict line as I realised `cc65` also writes
 `/opt/local/bin/grc`, #40143.

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Ticket URL: <https://trac.macports.org/ticket/54256>
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