Add more public DNS servers that offer high malware and unwanted content filtering rates

### Issue Details

Your current public DNS server list is a bit limited and outdated, so we have to manually set a more reliable and effective for filtering DNS service.

### Proposed solution

Add more public DNS servers that present high malware and unwanted content filtering rates in modern comparative tests, such as:

[CleanBrowsing Security Filter](https://cleanbrowsing.org/filters/)

[ControlD](https://controld.com/free-dns)

[dns0.eu](https://www.dns0.eu/)

[dns0.eu ZERO](https://www.dns0.eu/zero)

### Alternative solution

_No response_