[BUG] Prowlarr: External API access without basic_auth not working

[Wyall]

What happened?

Steps to reproduce:

1. Try to access a Prowlarr indexer API externally (RSS symbol in Prowlarr, e.g. https://URL.TLD/prowlarr/14/api?apikey=KEY

Expected results: No basic_auth according to the nginx config of Prowlarr. For me it does happen though.
If I change the prowlarr.conf closer to https://wiki.servarr.com/prowlarr/installation/reverse-proxy it seems to work; Remove the ^~ for /prowlarr and keep ~ for the API.

Swizzin commit

5253f36

What OS are you using?

Ubuntu 20.04 (Focal)

What architecture is your OS?

amd64

Relevant logs and output

No response