Merge branch 'runner-and-forks' into 'master'

Don't use the secure runner on forks

See merge request !166
6 jobs for master in 31 minutes and 49 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Lint
passed #17563
shellcheck

00:00:12

passed #17564
shfmt

00:00:09

 
  Build
passed #17565
secure
build:secure

00:27:36

 
  Test
passed #17567
fast-single-thread
test-basic-qemu

00:02:56

passed #17568
fast-single-thread
test-cloudimg-qemu

00:03:59

passed #17566
test-vagrant-boxes-format

00:00:36