Merge branch 'bump_pyyaml' into 'master'

Force pyyaml @ 6.0 to avoid 'TypeError: Loader missing'

See merge request !74
1 job for 36-prepare-proposal-outputs-and-prepare-localization-outputs-are-not-accepted-by-actev-exec in 29 seconds (queued for 7 seconds)
Name Stage Failure
failed
reject:other:branches Check Branch

Skipping Git submodules setup
Executing "step_script" stage of the job script
Using docker image sha256:0d5b39aeafc20cfcbcd0d6f8c69ac832987bc9a61758a677cf42aae8020fde43 for continuumio/anaconda3 with digest continuumio/anaconda3@sha256:fd81fe6b32b49c5381178bf87fef31c6c17ae8114ab7cf95f9511b610a5f18e3 ...
$ if [[ $CI_PIPELINE_SOURCE != "push" ]];then exit 1; fi
$ if [[ $CI_COMMIT_BRANCH =~ ^(master|baseline_master|placebo|(dev_.*))$ ]] && [[ ! $CI_COMMIT_BRANCH =~ ^dev_(placebo|baseline)$ ]];then exit 0; else echo "Branch name is invalid."; exit 1; fi
Branch name is invalid.
Cleaning up file based variables
ERROR: Job failed: exit code 1