[O11y][Azure Metrics] Migrate dashboards to by_value

packages/azure_metrics/changelog.yml

@@ -1,3 +1,8 @@
+- version: "1.0.21"
+  changes:
+    - description: Migrate the visualizations to by value in dashboards to minimize the saved object clutter and reduce time to load.
+      type: enhancement
+      link: https://github.com/elastic/integrations/pull/7320
 - version: "1.0.20"
   changes:
     - description: Add missing azure dimensions to the container_registry and compute_vm_scaleset datastreams