Certificate problems when downloading gradle

Hi,

anybody else having issues when downloading gradle e.g. via

https://downloads.gradle-dn.com/distributions/gradle-5.2.1-bin.zip

In my case, the browser shows me the finger and tells

downloads.gradle-dn.com uses an invalid security certificate. The certificate is not trusted because the issuer certificate is unknown. The server might not be sending the appropriate intermediate certificates. An additional root certificate may need to be imported. Error code: SEC_ERROR_UNKNOWN_ISSUER

Already handled with https://github.com/gradle/gradle/issues/8623