Prepare for v2.5.33 release #1383

Job	Run time
Add-on testing (ubuntu-latest, 3.8)	4m 4s
Add-on testing (ubuntu-latest, 3.9)	4m 5s
Add-on testing (ubuntu-latest, 3.10)	3m 28s
Add-on testing (ubuntu-latest, 3.11)	4m 30s
Add-on testing (windows-latest, 3.8)	4m 46s
Add-on testing (windows-latest, 3.9)	4m 34s
Add-on testing (windows-latest, 3.10)	4m 23s
Add-on testing (windows-latest, 3.11)	5m 9s
Add-on testing (ubuntu-20.04, 2.7)	6m 56s
Add-on testing (ubuntu-20.04, 3.5)	4m 2s
Add-on testing (ubuntu-20.04, 3.6)	3m 41s
Add-on testing (windows-latest, 2.7)	7m 2s
	56m 40s

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