mockgen: 1.5.0 -> 1.6.0

pkgs/development/tools/mockgen/default.nix

···
 { buildGoModule, lib, fetchFromGitHub }:
 buildGoModule rec {
   pname = "mockgen";
-  version = "1.5.0";
+  version = "1.6.0";
   src = fetchFromGitHub {
     owner = "golang";
     repo = "mock";
     rev = "v${version}";
-    sha256 = "sha256-YSPfe8/Ra72qk12+T78mTppvkag0Hw6O7WNyfhG4h4o=";
+    sha256 = "sha256-5Kp7oTmd8kqUN+rzm9cLqp9nb3jZdQyltGGQDiRSWcE=";
   };
-  vendorSha256 = "sha256-cL4a7iOSeaQiG6YO0im9bXxklCL1oyKhEDmB1BtEmEw=";
+  vendorSha256 = "sha256-5gkrn+OxbNN8J1lbgbxM8jACtKA7t07sbfJ7gVJWpJM=";
 
   doCheck = false;