Use unique user agent to request data from drupal.org

We already use a "versionless" user agent in some parts, like here: https://git.drupalcode.org/project/project_browser/-/blob/2.0.x/scripts/...
curl_setopt($ch, CURLOPT_USERAGENT, 'Curl.ProjectBrowser');

So I suggest to modify it slightly so we can do a regex that covers this and the new one with the version. I'll make a suggestion in the MR.

Actually, as they have different purposes. We can leave it like that.

I made a suggestion in the MR and also added a @todo as PB will be part of core eventually.

+1

Cool! We can leave that todo... maybe some day we'll be there, or someday we'll just remove it. ;)