Add release note for harperdb package symlink on deploy

Author: kriszyp

docs/technical-details/release-notes/4.tucker/4.5.12.md

@@ -1,6 +1,7 @@
 ### HarperDB 4.5.12
 7/9/2025
 
+- Fix for dynamically setting `harperdb` package symlink on deploy
 - Assign shard numbers from each node's config rather than from routes
 - Handle certificates without a common name, falling back to the SANs
 - Properly clean up blobs that are only transiently used for replication