changelog - Java 17 and Java 21 upcoming changes (#7082)

Signed-off-by: Usman Saleem <usman@usmans.info>

CHANGELOG.md

@@ -8,6 +8,7 @@
 - Forest pruning has been removed, it was deprecated since 24.1.0. In case you are still using it you must now remove any of the following options: `pruning-enabled`, `pruning-blocks-retained` and `pruning-block-confirmations`, from your configuration, and you may want to consider switching to Bonsai.  
 
 ### Upcoming Breaking Changes
+- Version 24.5.x will be the last series to support Java 17. Next release after versions 24.5.x will require Java 21 to build and run.
 - Receipt compaction will be enabled by default in a future version of Besu. After this change it will not be possible to downgrade to the previous Besu version.
 - PKI-backed QBFT will be removed in a future version of Besu. Other forms of QBFT will remain unchanged.