Merge branch 'cache-vs-artifacts' into 'master'

Test artifacts vs cache

See merge request !2
5 jobs for master in 4 minutes and 19 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #280033376
drupal8ci:build

00:01:55

 
  Test
passed #280033382
drupal8ci:code_coverage

00:02:23

100.0%
passed #280033379
drupal8ci:code_sniffer

00:01:27

passed #280033384
drupal8ci:existing_site_tests

00:02:16

passed #280033380
drupal8ci:unit_kernel_tests

00:01:57