[MacPorts] #53019: mogenerator: update to v1.31

[MacPorts]

#53019: mogenerator: update to v1.31
---------------------------+-------------------------
 Reporter:  steventondeur  |      Owner:
     Type:  update         |     Status:  new
 Priority:  Normal         |  Milestone:
Component:  ports          |    Version:  2.3.5
 Keywords:  haspatch       |       Port:  mogenerator
---------------------------+-------------------------
 mogenerator port file refers to an outdated version. Attached patch
 updates port file to v1.31

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Ticket URL: <https://trac.macports.org/ticket/53019>
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