update changelog #17769

Job	Run time
Core Basic (18.x)	6m 51s
Core Basic (20.x)	6m 10s
Core Basic - Plone 5 (18.x)	6m 58s
Core Blocks (18.x)	7m 11s
Core Blocks - Listing (18.x)	5m 14s
Core Blocks (20.x)	7m 13s
Core Blocks - Listing (20.x)	5m 29s
Core Control Panels (18.x)	3m 50s
Core Content (18.x)	3m 22s
Core Control Panels (20.x)	4m 3s
Coresandbox (18.x)	5m 1s
Core Volto Slate (18.x)	7m 28s
Core Volto Slate (20.x)	6m 57s
Guillotina (18.x)	3m 34s
Core Content (20.x)	2m 55s
Project Generator (18.x)	5m 27s
Project Generator (20.x)	5m 8s
Multilingual (18.x)	3m 45s
Multilingual in Seamless Mode (18.x)	3m 28s
Seamless Mode (18.x)	6m 57s
Working Copy (18.x)	3m 10s
	1h 50m 11s

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