Add stackadapt pixel code to demo request button on site

[linear]

add the below code to the 'request your demo' button on this page https://sourcegraph.com/contact/request-info?form_submission_source=request-info

<script>
document.getElementById("myButtonID").addEventListener("click",function() {
!function(s,a,e,v,n,t,z){if(s.saq)return;n=s.saq=function(){n.callMethod?n.callMethod.apply(n,arguments):n.queue.push(arguments)};if(!s._saq)s._saq=n;n.push=n;n.loaded=!0;n.version='1.0';n.queue=[];t=a.createElement(e);t.async=!0;t.src=v;z=a.getElementsByTagName(e)[0];z.parentNode.insertBefore(t,z)}(window,document,'script','https://tags.srv.stackadapt.com/events.js');saq('conv;saq('conv)', 'NVzOKkqz7PghcmmSeXTHWq');
});
</script>

[linear]

WEB-149 Add stackadapt pixel code to demo request button on site