Add Event Pixel to Submit button on /starship

[fabicastp]

CANCELLED. Add Event Pixel to Submit button on about.sourcegraph.com/starship. This will help us track registrations coming from LinkedIn Ads

window.lintrk('track', { conversion_id: 12782521 });

[gitstart-app[bot]]

Here is the GitStart Ticket for this issue: https://clients.gitstart.com/sourcegraph/1/tickets/SGM-6083

[fabicastp]

Cancel request. Thank you!