[O11y][AWS Usage] Migrate Usage Overview dashboard visualizations to lens in kibana 8.7.1 (#6368)

* Migrate Usage Overview dashboard visualizations to lenses

* Update changelog

* Address review comments

Author: milan-elastic

packages/aws/changelog.yml

@@ -1,4 +1,9 @@
 # newer versions go on top
+- version: "1.40.5"
+  changes:
+    - description: Migrate Usage Overview dashboard to lenses.
+      type: enhancement
+      link: https://github.com/elastic/integrations/pull/6368
 - version: "1.40.4"
   changes:
     - description: Migrate AWS CloudTrail dashboard visualizations to lenses.