[MacPorts] #44309: py-xhtml2pdf: update to version 0.0.6 and switch PIL dependency to PIL/Pillow

[MacPorts]

#44309: py-xhtml2pdf: update to version 0.0.6 and switch PIL dependency to
PIL/Pillow
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  Reporter:  ionic@…       |      Owner:  perry@…
      Type:  update        |     Status:  new
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:  haspatch
      Port:  py-xhtml2pdf  |
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Comment (by ionic@…):

 I guess we can also go ahead with that based on `openmaintainer`.

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Ticket URL: <https://trac.macports.org/ticket/44309#comment:2>
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