TLS 1.3 is the minimum protocol version for the libp2p TLS handshake: https://github.com/libp2p/specs/blob/master/tls/tls.md#handshake-protocol.
TLS 1.3 is the minimum protocol version for the libp2p TLS handshake: https://github.com/libp2p/specs/blob/master/tls/tls.md#handshake-protocol.