Java: Migration for deprecating sentry.enable-tracing (#3522)

Author: maciejwalkowiak

src/platforms/java/migration.mdx

@@ -8,6 +8,10 @@ description: "Learn about migrating from io.sentry:sentry 1.x to io.sentry:sentr
 
 `Sentry#startTransaction` by default does not bind created transaction to the scope. To start transaction with binding to the scope, use one of the new overloaded `startTransaction` methods taking `bindToScope` parameter and set it to `true`. Bound transaction can be retrieved with `Sentry#getSpan`.
 
+### Spring Boot
+
+The property `sentry.enable-tracing` is deprecated. To enable tracing simply set `sentry.traces-sample-rate` or create a bean implementing `TracesSamplerCallback`.
+
 ## Migrating from `io.sentry:sentry` `4.1.0` to `io.sentry:sentry` `4.2.0`
 
 `operation` is now a required property of the `SentryTransaction` and `SentrySpan`. Whenever a transaction or span is started, the value for `operation` must be provided: