[BUG] SSL error even after disabling verification of SSL security

**Describe the bug**
Some of my feeds use self-signed certificates. When I set "Verify SSL security" to "No" for these feeds individually, I am still not able to access the feeds via FreshRSS. I get the following error:

```
cURL error 59: failed setting cipher list: DEFAULT@SECLEVEL=1 [https://www.example.com]
```

**To Reproduce**
Some of the feeds are on my own server using a self-certificate that I generated myself using the following:

```
openssl req -x509 -nodes -days 365 -newkey rsa:2048
```

The feed is password-protected so I set the correct username and password in FreshRSS, change "Verify SSL security" to "No," and I try to refresh the feed but it fails with the above error.

**Expected behavior**
FreshRSS should disregard any SSL errors and fetch the feed.

**Environment information (please complete the following information):**
- OS: OpenBSD 6.9
- Browser: Firefox 90.0.2
- FreshRSS version: 1.18.1
- Database version: PostgreSQL 13.2
- PHP version: PHP 8.0.9
- Installation type: Self-hosted server

**Additional context**
- PHP-FPM runs in a chrooted environment by default in OpenBSD. This led to some php-curl errors for me until I figured out that I need to copy `/etc/resolv.conf` and `/etc/ssl/` to the chroot, but I doubt that this is still related to the issue.
- These feeds updated fine in another RSS reader that I was using previously when I enabled the option to ignore self-signed certificates.
- I saw the issues that seem somewhat related like #3029 but I would like to avoid making these security changes global as a workaround. I just want to disable SSL error checking for specific feeds so that the validity of other feeds is still checked.