rancher: fix build on darwin (#431535)

Changed files
+2
pkgs
by-name
ra
rancher
+2
pkgs/by-name/ra/rancher/package.nix
···
hash = "sha256-K0uMo/sRol2F02iV7b9NcmZcQGZ9iSEIdbZgT+Ea+/c=";
};
ldflags = [
"-w"
"-s"
···
hash = "sha256-K0uMo/sRol2F02iV7b9NcmZcQGZ9iSEIdbZgT+Ea+/c=";
};
+
env.CGO_ENABLED = 0;
+
ldflags = [
"-w"
"-s"