https://github.com/DNSCrypt/dnscrypt-proxy/releases/tag/2.1.5

- dnscrypt-proxy can be compiled with Go 1.21.0+
- Responses to blocked queries now include extended error codes
- Reliability of connections using HTTP/3 has been improved
- New configuration directive:
  `tls_key_log_file` When defined, this is the path to a file where
  TLS secret keys will be written to, so that DoH traffic can be
  locally inspected.