Infra: Update path to OneOfInsertion.ps1 (#10176)

eng/pipelines/insert.yml

@@ -163,7 +163,7 @@ steps:
   # Now that everything is set, actually perform the insertion.
   - powershell: |
       mv RoslynTools.VisualStudioInsertionTool.* RIT
-      .\RIT\tools\net46\OneOffInsertion.ps1 `
+      .\RIT\tools\net472\OneOffInsertion.ps1 `
         -autoComplete "$(Template.AutoComplete)" `
         -buildQueueName "$(Build.DefinitionName)" `
         -cherryPick "(default)" `