[#64109] Minify stylesheets in classic themes #1549

Job	Run time
Test twentysixteen build script	15s
Test twentyseventeen build script	14s
Test twentytwelve build script	13s
twentytwentythree empty file check	7s
Test twentyeleven build script	14s
twentytwentyfive empty file check	8s
Test twentytwentyone build script	56s
Test twentyfifteen build script	13s
twentytwentyone empty file check	7s
Test twentytwentyfive build script	11s
twentynineteen empty file check	7s
twentysixteen empty file check	6s
Test twentytwenty build script	26s
twentytwenty empty file check	7s
twentytwentytwo empty file check	7s
twentytwentyfour empty file check	8s
Test twentynineteen build script	17s
twentytwelve empty file check	8s
twentyten empty file check	7s
Test twentyten build script	12s
Test twentyfourteen build script	10s
twentyfourteen empty file check	7s
twentythirteen empty file check	8s
twentyseventeen empty file check	7s
twentyeleven empty file check	7s
Test twentythirteen build script	11s
twentyfifteen empty file check	6s
Test twentytwentytwo build script	18s
Create twentytwentyone ZIP file	1m 8s
Create twentytwelve ZIP file	16s
Create twentytwentytwo ZIP file	10s
Create twentytwentyfive ZIP file	11s
Create twentynineteen ZIP file	14s
Create twentyten ZIP file	11s
Create twentyfifteen ZIP file	15s
Create twentytwentythree ZIP file	6s
Create twentytwentyfour ZIP file	9s
Create twentysixteen ZIP file	10s
Create twentytwenty ZIP file	26s
Create twentyseventeen ZIP file	10s
Create twentythirteen ZIP file	9s
Create twentyfourteen ZIP file	9s
Create twentyeleven ZIP file	12s
Slack Notifications	0s
Failed workflow tasks	0s
	9m 33s

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