[PostGIS] #5779: create_upgrade.pl fails for 3.5.0-beta1

[PostGIS]

#5779: create_upgrade.pl fails for 3.5.0-beta1
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  Reporter:  Bas Couwenberg  |      Owner:  strk
      Type:  defect          |     Status:  new
  Priority:  medium          |  Milestone:  PostGIS 3.5.0
 Component:  build           |    Version:  master
Resolution:                  |   Keywords:
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Comment (by robe):

 Replying to [comment:7 Bas Couwenberg]:
 > You can probably make it fail with more parallel processes, on my system
 I use 11 of the 12 cores.

 Can you retry with @strk patch he committed at Temptative fix in
 [be1c2273cdfe0490a43b0148bb8f18ce57a63916/git]
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Ticket URL: <https://trac.osgeo.org/$(basename)s/ticket/5779#comment:9>
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