Update pyyaml to 5.4.1#105

pyup-bot wants to merge 4 commits intomasterRexGalilae/vasp-tools:masterfrom

pyup-update-pyyaml-5.3.1-to-5.4.1RexGalilae/vasp-tools:pyup-update-pyyaml-5.3.1-to-5.4.1Copy head branch name to clipboard