Release v1.5.16 commit

Signed-off-by: David Enyeart <enyeart@us.ibm.com>

Author: denyeart

release_notes/v1.5.16.md

@@ -0,0 +1,14 @@
+v1.5.16 Release Notes - December 7, 2025
+========================================
+
+v1.5.16 updates dependencies.
+
+Dependencies
+------------
+
+Fabric CA v1.5.16 has been tested with the following dependencies:
+- Go 1.25.5
+- Ubuntu 22.04 (for Docker images)
+- Databases
+    - PostgreSQL 13
+    - MySQL 8.0