[MacPorts] #32869: webarchiver: update to 0.4

[MacPorts]

#32869: webarchiver: update to 0.4
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  Reporter:  dhall@…      |      Owner:  macports-tickets@…
      Type:  update       |     Status:  new
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:
      Port:  webarchiver  |
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Comment (by khindenburg@…):

 I've update the Portfile to the latest "release" - since they don't use
 tags I used the git commit hash

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Ticket URL: <https://trac.macports.org/ticket/32869#comment:4>
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