beets: Fix wavpack mediafile test
beets: Fix wavpack mediafile test

Extend mutagen-1.43.patch to include a fix for now supported bitrate of
wavpack files. See
https://github.com/beetbox/mediafile/commit/d2fc3b59f77c515b02dfe7ad936f89264375d2b4
for upstream's version of the change.

NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs,NixOS/nixpkgs