[MacPorts] #51463: Use json endpoint for pypi livecheck

[MacPorts]

#51463: Use json endpoint for pypi livecheck
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  Reporter:  xeron.oskom@…  |      Owner:  macports-tickets@…
      Type:  enhancement    |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:
Resolution:                 |   Keywords:  haspatch
      Port:                 |
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Comment (by xeron.oskom@…):

 @raimue anything against applying this? Current XML endpoint is not
 reliable at all because it redirects to JSON endpoint for some ports.

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Ticket URL: <https://trac.macports.org/ticket/51463#comment:4>
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