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Note: for this to work, be sure that the source/target versions are not overridden in the maven-compiler-plugin configuration.
Mockito
See https://javadoc.io/doc/org.mockito/mockito-core/latest/org/mockito/Mockito.html#0.3 how to enable instrumentation of Mockito’s inline-mock-maker if it doesn’t work with Java 21.
Spring Boot
Upgrade the spring-boot-starter-parent version to the latest 3.4 version, find the version on https://github.com/spring-projects/spring-boot/tags
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