[MacPorts] #60645: pg app: launch script functionality: use sh, rather than bash, as latter may ultimately be removed from macOS (was: app PortGroup specifies using bash, but Catalina no longer uses bash)

[MacPorts]

#60645: pg app: launch script functionality: use sh, rather than bash, as latter
may ultimately be removed from macOS
---------------------+-----------------------
  Reporter:  kencu   |      Owner:  mascguy
      Type:  defect  |     Status:  assigned
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:  portgroup
      Port:          |
---------------------+-----------------------
Changes (by mascguy):

 * status:  new => assigned
 * cc: mascguy (removed)
 * owner:  (none) => mascguy


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Ticket URL: <https://trac.macports.org/ticket/60645#comment:5>
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