Update protobuf to 5.26.0#328

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

pyup-update-protobuf-3.11.3-to-5.26.0RexGalilae/vasp-tools:pyup-update-protobuf-3.11.3-to-5.26.0Copy head branch name to clipboard