Update NEXT_CHANGELOG.md (#2950)

## Changes

* Include entry for SDK upgrade
* Consistent naming

Author: pietern

NEXT_CHANGELOG.md

@@ -5,7 +5,8 @@
 ### Notable Changes
 
 ### Dependency updates
-* Update TF provider to v1.81.0 ([#2936](https://github.com/databricks/cli/pull/2936))
+* Upgrade SDK to v0.70.0 ([#2920](https://github.com/databricks/cli/pull/2920))
+* Upgrade TF provider to v1.81.0 ([#2936](https://github.com/databricks/cli/pull/2936))
 
 ### CLI