[MacPorts] #44056: grass: upgrade to 7.0.0

[MacPorts]

#44056: grass: upgrade to 7.0.0
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  Reporter:  mojca@…  |      Owner:  macports-tickets@…
      Type:  defect   |     Status:  new
  Priority:  Normal   |  Milestone:
 Component:  ports    |    Version:
Resolution:           |   Keywords:
      Port:  grass    |
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Comment (by mojca@…):

 Both `proj` and `postgresql93` have been addressed in the above given
 link.

 I don't want to become a maintainer of software for which I don't have the
 slightest clue how to use it.

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Ticket URL: <https://trac.macports.org/ticket/44056#comment:19>
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