[SAC] [OSGeo] #2755: upgrade wordpress to 5.9.3

[OSGeo]

#2755: upgrade wordpress to 5.9.3
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 Reporter:  robe           |      Owner:  sac@…
     Type:  task           |     Status:  new
 Priority:  normal         |  Milestone:  Sysadmin Contract 2022-II
Component:  Systems Admin  |   Keywords:
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 This has already been done on staging and seemed okay

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Ticket URL: <https://trac.osgeo.org/osgeo/ticket/2755>
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