[MacPorts] #41600: bison: update to 3.0.2

[MacPorts]

#41600: bison: update to 3.0.2
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  Reporter:  akim.demaille@…  |      Owner:  larryv@…
      Type:  update           |     Status:  assigned
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:
Resolution:                   |   Keywords:  haspatch
      Port:  bison            |
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Comment (by rjvbertin@…):

 I don't think users of the remaining 18% will think the same. I'm one of
 them, being a very regular user of xxdiff.
 If MacPorts had a feature to "hold" specific ports or if bison were a huge
 port things would be different, but as it is I don't think that the
 benefits of removing the bison-2 subport outweigh the disadvantages for
 some.

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Ticket URL: <https://trac.macports.org/ticket/41600#comment:48>
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