Update .gitlab-ci.yml

3 jobs for develop in 2 minutes and 44 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #75629
VS2017
VS2017-x64

00:00:36

passed #75631
buster Linux
clang-buster

00:01:10

passed #75630
buster Linux
gcc-buster

00:00:57