[MacPorts] #41600: bison: update to 3.0.2

[MacPorts]

#41600: bison: update to 3.0.2
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  Reporter:  akim.demaille@…  |      Owner:  mww@…
      Type:  update           |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:  2.2.1
Resolution:                   |   Keywords:  haspatch
      Port:  bison            |
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Comment (by rjvbertin@…):

 There are applications that don't work with bison 3 (xxdiff comes to
 mind). So I'd be all for keeping a bison-2 port in addition to having the
 latest version.

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Ticket URL: <https://trac.macports.org/ticket/41600#comment:14>
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