Added CHANGELOG entry

Author: gsmith-sas

CHANGELOG.md

@@ -1,4 +1,13 @@
 # SAS Viya Monitoring for Kubernetes
+## Unreleased
+* **Logging**
+  * [CHANGE] We have changed how we handle defining extra volumes for the Fluent Bit log collecting pods.
+This change should be transparent to virtually all users.  However, if you define additional volumes for
+these pods, you may need to update your configuration.  Refer to the
+(samples/generic-base/logging/user-values-fluent-bit-opensearch.yaml) for details and adjust the contents
+of your `$USER_DIR/logging/user-values-fluent-bit-opensearch.yaml` file accordingly.
+
+
 ## Version 1.2.42 (16SEP2025)
 * **Logging**
   * [FIX] Corrected handling of unavailable API endpoint in deploy_opensearch_content.sh