System information (version)

• OpenCV => 4.6
• Operating System / Platform =>Ububtu 20.04

Detailed description

Steps to reproduce

link to my onnx model https://drive.google.com/file/d/1oP3TrtYfn42SZ0JrDTd9tYhi8bGnmOe1/view?usp=sharing

Issue submission checklist

• I report the issue, it's not a question
• I checked the problem with documentation, FAQ, open issues,
  forum.opencv.org, Stack Overflow, etc and have not found any solution
• I updated to the latest OpenCV version and the issue is still there
• There is reproducer code and related data files: videos, images, onnx, etc