fix(java): mention that aspectjweaver is required for Crons only on Spring Boot (#13004)

Author: lcian

platform-includes/crons/requirements/java.mdx

@@ -1,3 +1,5 @@
 - Use our <PlatformLink to="/">getting started</PlatformLink> guide to install and configure the Sentry Java SDK (min 6.30.0) for your recurring job.
+<PlatformSection supported={["java.spring-boot"]}>
 - Ensure that `org.aspectj.aspectjweaver` is present as a dependency of your project.
+</PlatformSection>
 - [Create and configure](https://sentry.io/crons/create/) your first Monitor.