[MacPorts] #63639: tumbler: update to 0.2.9

[MacPorts]

#63639: tumbler: update to 0.2.9
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 Reporter:  mascguy  |      Owner:  mascguy
     Type:  update   |     Status:  assigned
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:
 Keywords:           |       Port:  tumbler
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 Now that this port's key dependencies have been updated - most notably,
 `glib2` and `libopenraw` - update to the latest upstream release.

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Ticket URL: <https://trac.macports.org/ticket/63639>
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