Convert grayscale images to RGB when saving AVIF with libavif < 1.3.0 - #10263

Convert grayscale images to RGB when saving AVIF with libavif < 1.3.0#10263

radarhere merged 3 commits into

python-pillow:mainpython-pillow/Pillow:mainfrom

lazerg:fix/issue-10262-avif-grayscale-old-libaviflazerg/Pillow:fix/issue-10262-avif-grayscale-old-libavifCopy head branch name to clipboard