prometheus-postfix-exporter: makeWrapper -> nativeBuildInputs

Changed files
+2 -1
pkgs
servers
monitoring
+2 -1
pkgs/servers/monitoring/prometheus/postfix-exporter.nix
···
sha256 = "1p2j66jzzgyv2w832pw57g02vrac6ldrblqllgwyy0i8krb3ibyz";
};
-
buildInputs = [ systemd makeWrapper ];
+
nativeBuildInputs = [ makeWrapper ];
+
buildInputs = [ systemd ];
goDeps = ./postfix-exporter-deps.nix;