[PostGIS] #6051: GHA msys2 showing lots of warnings and one error

[PostGIS]

#6051: GHA msys2 showing lots of warnings and one error
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  Reporter:  robe    |      Owner:  robe
      Type:  defect  |     Status:  assigned
  Priority:  medium  |  Milestone:  PostGIS 3.7.0
 Component:  build   |    Version:  3.5.x
Resolution:          |   Keywords:  windows
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Comment (by strk):

 It would help if you reported some of those errors, or added a link to
 read those errors.
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/6051#comment:1>
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