valgrind: 3.21.0 -> 3.22.0

Changes: https://sourceforge.net/p/valgrind/mailman/message/50323635/

pkgs/development/tools/analysis/valgrind/default.nix

···
 
 stdenv.mkDerivation rec {
   pname = "valgrind";
-  version = "3.21.0";
+  version = "3.22.0";
 
   src = fetchurl {
     url = "https://sourceware.org/pub/${pname}/${pname}-${version}.tar.bz2";
-    hash = "sha256-EM4WGLs+M/rRbreVUrCj4SEXYkSKDX/OEcimJDuayXE=";
+    hash = "sha256-yBHbWt0sX3KZRMr0fE56Zdyqu5Rh5HK1eHZd179tLUw=";
   };
 
   patches = [