nixos/transmission: fix AppArmor profile to include keyutils

Changed files
+1
nixos
modules
services
+1
nixos/modules/services/torrent/transmission.nix
···
${getLib pkgs.attr}/lib/libattr*.so* mr,
${getLib pkgs.lz4}/lib/liblz4*.so* mr,
${getLib pkgs.libkrb5}/lib/lib*.so* mr,
+
${getLib pkgs.keyutils}/lib/libkeyutils*.so* mr,
@{PROC}/sys/kernel/random/uuid r,
@{PROC}/sys/vm/overcommit_memory r,