The '/api/v2/update/:distribution/:channel/:platform(windows|win32-x64)/:version/RELEASES' endpoint redirects to github regardless of the channel and dev releases don't live on github. We do upload the RELEASES file to the same bucket where we put the package, though.

Here's an example URL: https://mciuploads.s3.amazonaws.com/10gen-compass-main/393c88c4b95ee4ac5d0ff66f271dc94f40496e35_7954/mongodb-compass-dev-RELEASES

393c88c4b95ee4ac5d0ff66f271dc94f40496e35_7954 is the `bucket_key_prefix` we already use elsewhere.