[MacPorts] #40057: mysqlxx: update to 3.2.0

[MacPorts]

#40057: mysqlxx: update to 3.2.0
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  Reporter:  kepeng@…  |      Owner:  kayos@…
      Type:  update    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.2.0
Resolution:            |   Keywords:  haspatch
      Port:  mysqlxx   |
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Comment (by larryv@…):

 You’re currently listed as the maintainer for four of our ports. Do you
 want to drop your maintainership?

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Ticket URL: <https://trac.macports.org/ticket/40057#comment:8>
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