You are using MITM proxy as a service. In addition to analyzing all traffic and blocking legitimate users with captchas, they can inject stuff in there, too.
This one hasn't been taken out yet: https://gitlab.lain.la/dCF/deCloudflare/-/blob/master/readme...
The taken down versions of the repo usually link here: https://en.wikipedia.org/wiki/Wikipedia:Uphill_battles