graphics/feh: Update to 3.10.3

Upstream changes:

• Fix feh not respecting aspect ratio of thumbnails that are smaller than --thumb-width and --thumb-height
• Fix --no-recursive behaving like --recursive
• Fix rotation by 180° corrupting images
• Speed up --sort=size and --sort=mtime by caching stat(2) calls

Sponsored by: The FreeBSD Foundation