Add changelog #14411

Job	Run time
Core Basic (18.x)	6m 21s
Core Basic (20.x)	6m 38s
Core Blocks (18.x)	7m 12s
Core Blocks (20.x)	6m 56s
Core Blocks - Listing (18.x)	5m 36s
Core Blocks - Listing (20.x)	4m 54s
Core Content (18.x)	3m 42s
Core Control Panels (18.x)	3m 51s
Core Control Panels (20.x)	4m 0s
Core Content (20.x)	3m 40s
Core Volto Slate (18.x)	6m 54s
Core Volto Slate (20.x)	6m 59s
Core Basic - Plone 5 (18.x)	6m 39s
Coresandbox (18.x)	3m 54s
Project Generator (18.x)	5m 50s
Guillotina (18.x)	3m 28s
Multilingual (18.x)	3m 6s
Working Copy (18.x)	3m 9s
Project Generator (20.x)	5m 6s
Seamless Mode (18.x)	6m 28s
Multilingual in Seamless Mode (18.x)	3m 9s
	1h 47m 32s

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