Client.zig: support rsa_pss_rsae_sha384 and rsa_pss_rsae_sha512

This fixes HTTP GET to https://www.iana.org/domains/reserved
for example
2e424e019fdec05eba committed on 7/7/2023, 1:36:15 AM· committed by Andrew Kelleyparent44df3a1
1 file changedLine totals unavailable