mpc-qt: 18.03 -> 18.08 (#44746)

Semi-automatic update generated by https://github.com/ryantm/nixpkgs-update tools. This update was made based on information from https://repology.org/metapackage/mpc-qt/versions.

pkgs/applications/video/mpc-qt/default.nix

@@ -2,13 +2,13 @@
 
 stdenv.mkDerivation rec {
   name = "mpc-qt-${version}";
-  version = "18.03";
+  version = "18.08";
 
   src = fetchFromGitHub {
     owner = "cmdrkotori";
     repo = "mpc-qt";
     rev = "v${version}";
-    sha256 = "0mhzdgjgv08cvnscbfndpr0s8ndbcf91b61zfqspa1qv4wlqd716";
+    sha256 = "1rxlkg3vsrapazdlb1i6c5a1vvf2114bsqwzcm3n2wc5c93yqsna";
   };
 
   nativeBuildInputs = [ pkgconfig qmake qttools ];