Expected behaviour

use the latest libpng 1.6.37

Actual behaviour

libpng15 in use

opencv use 1.6.37

Steps to reproduce

• example code
• operating system
• linux x86
• opencv-python version 4.5.2.54

Issue submission checklist

• This is not a generic OpenCV usage question (looking for help for coding, other usage questions, homework etc.)
• I have read the README of this repository and understand that this repository provides only an automated build toolchain for OpenCV Python packages (there is no actual OpenCV code here)
• The issue is related to the build scripts in this repository, to the pre-built binaries or is a feature request (such as "please enable this additional dependency")
• I'm using the latest version of opencv-python