Backport #6247 to Volto 16 #17187

Job	Run time
Core Basic (14.x)	8m 27s
Core Basic (16.x)	8m 14s
Core Basic (18.x)	8m 6s
Core Basic - Plone 5 (16.x)	8m 54s
Core Blocks (14.x)	10m 7s
Coresandbox (16.x, 3.7)	4m 55s
Core Blocks (16.x)	10m 16s
Core Volto Slate (14.x)	8m 36s
Core Blocks (18.x)	11m 1s
Project Generator (16.x)	4m 38s
Core Volto Slate (16.x)	8m 21s
Guillotina (16.x)	3m 47s
Project Generator (18.x)	4m 42s
Core Volto Slate (18.x)	8m 24s
Multilingual (16.x)	3m 25s
Multilingual in Seamless Mode (18.x)	3m 38s
Working Copy (16.x)	3m 27s
Seamless Mode (16.x)	8m 6s
	2h 7m 4s

Provide feedback