[PostGIS] #5936: topology_upgrade.sql is not done in a single transaction

[PostGIS]

#5936: topology_upgrade.sql is not done in a single transaction
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 Reporter:  strk      |      Owner:  strk
     Type:  defect    |     Status:  new
 Priority:  medium    |  Milestone:  PostGIS 3.4.5
Component:  topology  |    Version:  3.4.x
 Keywords:            |
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 A BEGIN is missing at the start of the script
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Ticket URL: <https://trac.osgeo.org/postgis/ticket/5936>
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