chore: upgrade deps and attempt to enable using go1.19 (#869)

* upgrade to our go.mod enabled of psiphon-tunnel-core such that
we're now using v2.0.24 of the tunnel-core;

* upgrade to the latest lucas-clemente/quic-go release;

* upgrade to the latest ooni/oohttp release (which is based on go1.19
but the diff seems good enough to continue using go1.18.x as well);

* upgrade to the latest ooni/oocrypto release (for which we can make the
same remarks regarding using go1.18.x);

* deal with changes in lucas-clemente/quic-go API as well as changes
in what a go1.19 *tls.Conn compatible type should look like.

Unfortunately, we cannot switch to go1.19 because psiphon forks quic-go
and their fork's still not building using such a version of go.

Part of ooni/probe#2211.

internal/engine/experiment/simplequicping/simplequicping.go

@@ -179,7 +179,7 @@ func (m *Measurer) quicHandshake(ctx context.Context, index int64,
 		RootCAs:    netxlite.NewDefaultCertPool(),
 		ServerName: sni,
 	}
-	_, err := dialer.DialContext(ctx, "udp", address, tlsConfig, &quic.Config{})
+	_, err := dialer.DialContext(ctx, address, tlsConfig, &quic.Config{})
 	ol.Stop(err)
 	sp.QUICHandshake = trace.FirstQUICHandshakeOrNil() // record the first handshake from the buffer
 	sp.NetworkEvents = append(sp.NetworkEvents, trace.NetworkEvents()...)