[MacPorts] #58261: glib2(-devel): update to latest version 2.60.0

[MacPorts]

#58261: glib2(-devel): update to latest version 2.60.0
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  Reporter:  dbevans            |      Owner:  ryandesign
      Type:  defect             |     Status:  assigned
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:
Resolution:                     |   Keywords:
      Port:  glib2 glib2-devel  |
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Comment (by dbevans):

 OK, I'll take a look and (hopefully) submit a PR. I'm dealing with a lot
 other meson issues anyway.

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Ticket URL: <https://trac.macports.org/ticket/58261#comment:3>
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