There is a mismatch between the jar name and the maven-metadata.xml
https://repo.spring.io/snapshot/org/springframework/boot/spring-boot-actuator/2.3.0.BUILD-SNAPSHOT/spring-boot-actuator-2.3.0.BUILD-20200321.144200-411.jar
Comment From: snicoll
@maczikasz thank you, we are aware of the problem and have raised a support request with JFrog as we believe this is a regression introduced by a recent upgrade on repo.spring.io.