[MacPorts] #57409: tracker: Update to 2.0.4

[MacPorts]

#57409: tracker: Update to 2.0.4
------------------------+----------------------
 Reporter:  ryandesign  |      Owner:  dbevans
     Type:  defect      |     Status:  assigned
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:
 Keywords:              |       Port:  tracker
------------------------+----------------------
 Should tracker be updated?

 {{{
 $ port livecheck tracker
 tracker seems to have been updated (port version: 1.12.4, new version:
 2.0.4)
 }}}

 It's a major version increase so I don't know if it would break something.
 But there are only 6 ports using tracker right now so maybe they can be
 tested.

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Ticket URL: <https://trac.macports.org/ticket/57409>
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