Update protobuf requirement from <=3.20.1 to <4.21.3#8346

glenn-jocher merged 2 commits intomasterultralytics/yolov5:masterfrom

dependabot/pip/protobuf-lt-4.21.3ultralytics/yolov5:dependabot/pip/protobuf-lt-4.21.3Copy head branch name to clipboard