[MacPorts] #42298: librsvg: update to version 2.40.1

[MacPorts]

#42298: librsvg: update to version 2.40.1
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 Reporter:  devans@…  |      Owner:  pixilla@…
     Type:  update    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.2.1
 Keywords:            |       Port:  librsvg
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 Current port version is 2.36.4.

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Ticket URL: <https://trac.macports.org/ticket/42298>
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