build: Update goreleaser for Elm UI

shell.nix

@@ -3,11 +3,13 @@ stdenv.mkDerivation rec {
   name = "env";
   env = buildEnv { name = name; paths = buildInputs; };
   buildInputs = [
+    dpkg
     elmPackages.elm
     elmPackages.elm-format
     go
     golint
     nodejs
+    rpm
     swaks
   ];
 }