Update .gitlab-ci.yml

3 jobs for master in 11 seconds (queued for 1 second)
latest
Status Name Job ID Coverage
  Build Pdf
failed build-pdf #5036

00:00:11

 
  Build Hugo
skipped build-hugo-master #5037
allowed to fail
 
  Publish
skipped pages #5038
 
Name Stage Failure
failed
build-pdf Build Pdf
fatal: clone of 'https://gitlab-ci-token:[MASKED]@gitlab.ce.jku.at/oppl/digitale-grundkompetenzen.git' into submodule path '/builds/oppl/website-digkom/content/courses' failed
Failed to clone 'content/courses'. Retry scheduled
Cloning into '/builds/oppl/website-digkom/themes/academic'...
Cloning into '/builds/oppl/website-digkom/content/courses'...
fatal: unable to access 'https://gitlab-ci-token:[MASKED]@gitlab.ce.jku.at/oppl/digitale-grundkompetenzen.git/': server certificate verification failed. CAfile: /etc/ssl/certs/ca-certificates.crt CRLfile: none
fatal: clone of 'https://gitlab-ci-token:[MASKED]@gitlab.ce.jku.at/oppl/digitale-grundkompetenzen.git' into submodule path '/builds/oppl/website-digkom/content/courses' failed
Failed to clone 'content/courses' a second time, aborting
Cleaning up file based variables
ERROR: Job failed: exit code 1