DOCSP-37651 added v1.42 and v1.43 rn (#643)

* added v1.42 and v1.43 rn

Author: kyuan-mongodb

source/release-notes.txt

@@ -10,6 +10,34 @@ Atlas Charts Release Notes
    :depth: 1
    :class: twocols
 
+|charts| v1.43.0
+----------------
+
+*Released March 11th, 2024*
+
+Improvements in this release:
+
+- :ref:`Natural Language Charts <nlc>` is in public preview.
+
+Bug fixes in this release:
+
+- Fixes an issue where users could get a Charts failed to initialize error.
+
+|charts| v1.42.0
+----------------
+
+*Released January 29th, 2024*
+
+Improvements in this release:
+
+- Project Owners can :ref:`add and remove dashboard owners
+  <dashboard-ownership>` from dashboards on the Owners page.
+
+Bug fixes in this release:
+
+- Fixes an issue where users could incorrectly open the chart builder using a URL.
+- Conditional formatting now works correctly for dashboards you duplicate and export.
+
 |charts| v1.41.0
 ----------------