tsm-client: fix build with libxcrypt
After libcrypt support got dropped from `glibc`,
`libxcrypt` needs to be added to packages that still require it.
References:
https://github.com/NixOS/nixpkgs/pull/181764
https://github.com/NixOS/nixpkgs/commit/ff30c899d8bd92d1a1c9f4d4e81455b04cb0868e