This is probably related to Oracle changing the license for Java 8 as of the April 16, 2019 release of JDK 8u211 and JDK 8u212 (or maybe for earlier versions, but I'm not sure). In short, using Oracle JDK 8u211 and newer for non-personal use cases is a violation of the license agreement unless you are paying Oracle for some other license, see the warning here for details. Using the JDK inside of Jenkins probably does not qualify as personal use according to the FAQ here.
So, while maybe some crawler or plugin update could fix this, I don't think it would make sense to do so. You should switch to using OpenJDK builds from your OS package manager or something like https://adoptopenjdk.net/. Updating this plugin to download from AdoptOpenJDK sounds like a good RFE, but I have no plans to work on it.