Noticed these warnings when starting AEM 65 with java 11. It looks like from this that these are just warnings and can be ignored. However it looked like some extra time was also taken to start the instance/s.
To avoid these added following to your start.bat CQ_JVM_OPTS JVM options
-Dnashorn.args=--no-deprecation-warning
Please add if it works or not..
See more about this..
https://github.com/camunda/docker-camunda-bpm-platform/issues/129
https://stackoverflow.com/questions/55641738/how-to-hide-java-11-nashorn-deprecation-warnings