Land rapid7#19721, Fix version in CVE-2020-0668 module

Fix version check for cve-2020-0668 Service Tracing

Author: msutovsky-r7

modules/exploits/windows/local/cve_2020_0668_service_tracing.rb

@@ -261,7 +261,6 @@ def exploit
 
     # start file copy
     rastapi_privileged_filecopy(payload_dll, exploit_dir, upload_payload_pathname, target_payload_pathname)
-
     # launch trigger
     launch_dll_trigger
     print_warning("Manual cleanup after reboot required for #{target_payload_pathname} and #{exploit_dir}")
@@ -285,8 +284,7 @@ def validate_target
     end
 
     version_info = get_version_info
-    vprint_status("Version: #{version_info.number}")
-    unless version_info.build_version.between?(Msf::WindowsVersion::Win10_1803, Msf::WindowsVersion::Win10_1909)
+    unless version_info.build_number.between?(Msf::WindowsVersion::Win10_1803, Msf::WindowsVersion::Win10_1909)
       fail_with(Failure::NotVulnerable, 'The exploit only supports Windows 10 build versions 17134-18363')
     end
   end