Description of the Issue

notepad-plus-plus.org and community.notepad-plus-plus.org have apparently added captcha "I am not a bot" protection. For certain URLs, this is messing things up:

• https://notepad-plus-plus.org/update/getDownloadUrl.php => this means that Notepad++'s ? > Update Notepad++ (for any version of Notepad++) tries to get the XML from getDownloadUrl.php, but instead gets presented with a captcha, so it errors out saying that it's not a valid GUP XML.
  
• https://community.notepad-plus-plus/ RSS feeds (click on the RSS icon and subscribe with your favorite RSS reader) => this prevents RSS readers from being able to follow Community Forum conversations or categories.

See also forum posts about GUP and about Forum RSS

Steps to Reproduce the Issue

1. Use Notepad++ ? > Update Notepad++ on a computer where you haven't been to the download URL recently (so you haven't seen the captcha yet)
2. Get error message.
3. Go to your browser, and go to https://notepad-plus-plus.org/update/getDownloadUrl.php
4. Get an "I am not a robot" captcha, like:
   and then have to go identify stop signs, traffic lights, or something else
5. Now the getDownloadUrl.php actually gets to output the XML
6. Now if you go back to Notepad++ and run ? > Update Notepad++, the URL doesn't ask for a captcha, so you get the normal Update Available dialog:

Expected Behavior

The download URL and RSS feed URLs should not ever do a captcha, because they are specifically designed to be called by automated processes (bots), not by humans

Actual Behavior

Those URLs ask for a captcha, and get in the way of Notepad++ being able to update