dnsCheck: update the publicDNSQueryURI to https://quay.io

Querying at https://quay.io instead of http://quay.io returns 200 which
is a clearer way to interpret that the check succeeded. This also serves
the purpose of querying quay.io without any confusing debug message.

pkg/crc/services/dns/dns.go

@@ -20,7 +20,7 @@ import (
 
 const (
 	dnsServicePort    = 53
-	publicDNSQueryURI = "quay.io"
+	publicDNSQueryURI = "https://quay.io"
 	dnsmasqService    = "dnsmasq.service"
 )