spankbang - 403 Forbidden errors
### DO NOT REMOVE OR SKIP THE ISSUE TEMPLATE

- [X] I understand that I will be **blocked** if I *intentionally* remove or skip any mandatory\* field

### Checklist

- [X] I'm reporting that a **supported** site is broken
- [X] I've verified that I'm running yt-dlp version **2023.03.04** ([update instructions](https://github.com/yt-dlp/yt-dlp#update)) or later (specify commit)
- [X] I've checked that all provided URLs are playable in a browser with the same IP and same login details
- [X] I've checked that all URLs and arguments with special characters are [properly quoted or escaped](https://github.com/yt-dlp/yt-dlp/wiki/FAQ#video-url-contains-an-ampersand--and-im-getting-some-strange-output-1-2839-or-v-is-not-recognized-as-an-internal-or-external-command)
- [X] I've searched [known issues](https://github.com/yt-dlp/yt-dlp/issues/3766) and the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=) for similar issues **including closed ones**. DO NOT post duplicates
- [X] I've read the [guidelines for opening an issue](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#opening-an-issue)
- [X] I've read about [sharing account credentials](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#are-you-willing-to-share-account-details-if-needed) and I'm willing to share it if required

### Region

USA

### Provide a description that is worded well enough to be understood

All video url's from Spankbang are returning 403 forbidden errors. I have confirmed that they load and play in the browser just fine. Verbose output is provided. My `yt-dlp` version is completely up to date. 

### Provide verbose output that clearly demonstrates the problem

- [X] Run **your** yt-dlp command with **-vU** flag added (`yt-dlp -vU <your command line>`)
- [ ] If using API, add `'verbose': True` to `YoutubeDL` params instead
- [X] Copy the WHOLE output (starting with `[debug] Command-line config`) and insert it below

### Complete Verbose Output

```shell
> yt-dlp -vU https://spankbang.com/6c6z5/video/fan+appreciation+event+english+sub
[debug] Command-line config: ['-vU', 'https://spankbang.com/6c6z5/video/fan+appreciation+event+english+sub']
[debug] Encodings: locale UTF-8, fs utf-8, out utf-8, err utf-8, pref UTF-8
[debug] yt-dlp version 2022.02.04 [c1653e9ef] (zip)
[debug] Python version 3.8.10 (CPython 64bit) - Linux-4.4.0-19041-Microsoft-x86_64-with-glibc2.29
[debug] exe versions: ffmpeg 4.2.4, ffprobe 4.2.4
[debug] Optional libraries: Cryptodome, secretstorage, mutagen, sqlite, websockets
[debug] Proxy map: {}
Latest version: 2023.03.04, Current version: 2022.02.04
Current Build Hash a16fe3b3bd474d562c4b8645579b209377b967d58d4edffe6e31dc8de81d7283
Updating to version 2023.03.04 ...
ERROR: Unable to write to /usr/local/bin/yt-dlp; Try running as administrator
[debug] [SpankBang] Extracting URL: https://spankbang.com/6c6z5/video/fan+appreciation+event+english+sub
[SpankBang] 6c6z5: Downloading webpage
ERROR: [SpankBang] 6c6z5: Unable to download webpage: HTTP Error 403: Forbidden (caused by <HTTPError 403: 'Forbidden'>); please report this issue on  https://github.com/yt-dlp/yt-dlp , filling out the "Broken site" issue template properly. Confirm you are on the latest version using -U (caused by <HTTPError 403: 'Forbidden'>); please report this issue on  https://github.com/yt-dlp/yt-dlp , filling out the "Broken site" issue template properly. Confirm you are on the latest version using -U
  File "/usr/local/bin/yt-dlp/yt_dlp/extractor/common.py", line 730, in _request_webpage
    return self._downloader.urlopen(url_or_request)
  File "/usr/local/bin/yt-dlp/yt_dlp/YoutubeDL.py", line 3558, in urlopen    return self._opener.open(req, timeout=self._socket_timeout)  File "/usr/lib/python3.8/urllib/request.py", line 531, in open
    response = meth(req, response)
  File "/usr/lib/python3.8/urllib/request.py", line 640, in http_response
    response = self.parent.error(
  File "/usr/lib/python3.8/urllib/request.py", line 569, in error
    return self._call_chain(*args)
  File "/usr/lib/python3.8/urllib/request.py", line 502, in _call_chain
    result = func(*args)
  File "/usr/lib/python3.8/urllib/request.py", line 649, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
```