[MacPorts] #69920: fossil: upgrade to 2.24 and update port to comply with Fossil maintainer instructions

[MacPorts]

#69920: fossil: upgrade to 2.24 and update port to comply with Fossil maintainer
instructions
------------------------+----------------------
  Reporter:  ksshannon  |      Owner:  ci42
      Type:  update     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.9.3
Resolution:             |   Keywords:  haspatch
      Port:  fossil     |
------------------------+----------------------

Comment (by ksshannon):

 I did bump the version, figuring I'd do it all at once.  If it's better to
 do separate changes, I can do that.

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Ticket URL: <https://trac.macports.org/ticket/69920#comment:2>
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