[tooling] Upgrade psycopg, fix legacy ssl tests #1110
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This upgrade psycopg and rewrite
legacy_ssl_version_rejectedto work with any python version.Python / openssl / etc. don't support TLS < 1.2 anymore, so
legacy_ssl_version_rejectedmanually send TLS packets to try to establish an old TLS connection and check for legacy version alerts.This has the same behavior as before (and raw packets on the TCP connection are the same as before).
Follow #1109