[MacPorts] #60606: drupal8: update to 8.9.x

[MacPorts]

#60606: drupal8: update to 8.9.x
---------------------------+--------------------
  Reporter:  chrstphrchvz  |      Owner:  (none)
      Type:  update        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:
      Port:  drupal8       |
---------------------------+--------------------

Comment (by chrstphrchvz):

 Drupal 8.x is end-of-life as of 2021-11-02. I am inclined to propose
 deleting this port and the `+drupal8` variant of `drush`. I have no
 interest in adding Drupal 9 to MacPorts.

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Ticket URL: <https://trac.macports.org/ticket/60606#comment:2>
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