There's a closed pull request on the void-packages repository

python-PyQt5: update to 5.15.0
https://github.com/void-linux/void-packages/pull/24076

Description:
requires: #23666 
also rebuild qutebrowser against python3-PyQt5 1.15.0
xlint will fail on python-PyQt5, because of indenting, but that's a false alarm