What does this async script come from?

When I deploy my web app to Azure, I see the following in the <head>

<script src="/osits-Treadfull-Fathe-you-canne-a-So-giue-and-mi" async></script>

In each environment the script has a different name, but it’s always a bunch of fake English words concatenated with a dash. For example, in another environment, the script is

<script src="/robattemper-swell-know-shappe-Minity-fie-in-Cap-" async></script>

If I run the app locally, the script is not included. The content of the script is minified/obfuscated, so I can’t tell what it’s doing by reading the code. If I unminify it, it’s 9.5k lines long, so it’s pretty substantial.