Update thanks.html

Author: laf

_includes/thanks.html

@@ -39,6 +39,7 @@ <h3>Sponsors</h3>
                     <a href="https://opencollective.com/librenms/sponsors/17/website" target="_blank"><img src="https://opencollective.com/librenms/sponsors/17/avatar"></a>
                     <a href="https://opencollective.com/librenms/sponsors/18/website" target="_blank"><img src="https://opencollective.com/librenms/sponsors/18/avatar"></a>
                     <a href="https://opencollective.com/librenms/sponsors/19/website" target="_blank"><img src="https://opencollective.com/librenms/sponsors/19/avatar"></a>
+                    <a href="https://json.tools/" target="_blank"><img src="https://images.opencollective.com/jason-tools/95e0976/avatar.png?height=84"></a>
                 </div>
 
             </div>