Use composer cache for unit test build

5 jobs for task/update-t3olayout in 5 minutes and 47 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Test
passed #13690
test:php

00:00:20

passed #13689
test:typoscript

00:00:24

passed #13691
test:unit

00:03:16

 
  Build
passed #13692
build

00:00:32

 
  Layout
passed #13693
layout

00:01:57