Update .gitlab-ci.yml

1 job for master in 23 seconds (queued for 1 second)
Name Stage Failure
failed
build Test
Reading package lists...
$ apt-get install openjfx=8u161-b12-1ubuntu2 libopenjfx-java=8u161-b12-1ubuntu2 libopenjfx-jni=8u161-b12-1ubuntu2
Reading package lists...
Building dependency tree...
Reading state information...
E: Version '8u161-b12-1ubuntu2' for 'openjfx' was not found
E: Version '8u161-b12-1ubuntu2' for 'libopenjfx-java' was not found
E: Version '8u161-b12-1ubuntu2' for 'libopenjfx-jni' was not found
ERROR: Job failed: exit code 1