[MacPorts] #66852: cairo, cairo-devel: Update to 1.18.0

[MacPorts]

#66852: cairo, cairo-devel: Update to 1.18.0
--------------------------------+----------------------
  Reporter:  ryandesign         |      Owner:  mascguy
      Type:  update             |     Status:  assigned
  Priority:  Normal             |  Milestone:
 Component:  ports              |    Version:  2.8.1
Resolution:                     |   Keywords:
      Port:  cairo cairo-devel  |
--------------------------------+----------------------

Comment (by Christopher Nielsen <mascguy@…>):

 In [changeset:"fd95211a24a504dc890a4550661bd0f917eae0fe/macports-ports"
 fd95211a24a504dc890a4550661bd0f917eae0fe/macports-ports] (master):
 {{{
 #!ConfigurableCommitTicketReference repository="macports-ports"
 revision="fd95211a24a504dc890a4550661bd0f917eae0fe"
 cairo-devel: tests: ensure port installed and up-to-date

 See: https://trac.macports.org/ticket/66852
 }}}

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Ticket URL: <https://trac.macports.org/ticket/66852#comment:18>
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