libmpc: 1.2.1 -> 1.3.1

pkgs/development/libraries/libmpc/default.nix

···
 
 stdenv.mkDerivation rec {
   pname = "libmpc";
-  version = "1.2.1"; # to avoid clash with the MPD client
+  version = "1.3.1"; # to avoid clash with the MPD client
 
   src = fetchurl {
     url = "mirror://gnu/mpc/mpc-${version}.tar.gz";
-    sha256 = "0n846hqfqvmsmim7qdlms0qr86f1hck19p12nq3g3z2x74n3sl0p";
+    sha256 = "sha256-q2QkkvXPiCt0qgy3MM1BCoHtzb7IlRg86TDnBsHHWbg=";
   };
 
   strictDeps = true;