Bump opencv to 4.7.0

[thomedw]

This PR bumps opencv version to 4.7.0.

I have run the checks, including the macos arm64, and it seems OK to me.

[vonnieda]

Excellent, thank you @thomedw! Very much appreciate your effort on this!

I'll run a couple quick tests and get this merged!

[thomedw]

Hi @vonnieda,

Thank you for taking the time to review and check this PR. I appreciate your efforts in testing and merging my code.

I was wondering if there's an estimated timeline for when my pull request might be merged? I'm excited to see my contributions being added to the project.

If there's anything else you need from me, please let me know. I'm available to make any further changes or help in any way I can.

Thanks again for your time and efforts.

Best regards,
Thomas

[vonnieda]

Looks good, thanks again @thomedw! I had a concern about the changed URL for the windows download, but I verified the files look good.

[thomedw]

I'm glad to hear that the files look good. Again, thank you very much for taking the time to review and merge.