Update .gitlab-ci.yml

1 job for master in 7 seconds
Name Stage Failure
failed
build Build
$ git pull
Already up-to-date.
$ git submodule sync --recursive
fatal: no submodule mapping found in .gitmodules for path '.vscode'
$ git submodule update --init --recursive --remote
Submodule '.pandoc' (https://github.com/tfragner/pandoc-environment.git) registered for path '.pandoc'
fatal: No url found for submodule path '.vscode' in .gitmodules
Cleaning up file based variables
ERROR: Job failed: exit code 1