opencv conflict, not user friendly

[DefTruth]

🐛 Bug

I already have opencv 4.5.1 in my device, but albumentations still try install opencv-python-headless into my device, this make conflict happens between two installed opencv ! how to solve this problem ? It's seem not friendly for users.

To Reproduce

Steps to reproduce the behavior:

1. pip install albumentations

Expected behavior

do not install opencv-python-headless if i have opencv

Environment

• Albumentations version (e.g., 1.0.0):
• Python version (e.g., 3.8):
• OS (e.g., MacOS):
• How you installed albumentations (pip):
• Any other relevant information:

Additional context

no context

[YoniChechik]

This solves it : #1293 (comment)