[MacPorts] #48160: sigil: update to 0.8.7

[MacPorts]

#48160: sigil: update to 0.8.7
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 Reporter:  ryandesign@…  |      Owner:  krischik@…
     Type:  update        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:
 Keywords:                |       Port:  sigil
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 Please update sigil to the latest version, currently 0.8.7, available now
 from https://github.com/Sigil-Ebook/Sigil

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Ticket URL: <https://trac.macports.org/ticket/48160>
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