App Manager v1.120.2 release notes (#2808)

* App Manager v1.120.2 release notes

* Update rn-app-manager.md

---------

Co-authored-by: replicated-ci-kots <[email protected]>
Co-authored-by: Alex Parker <[email protected]>

Author: 3 people

docs/release-notes/rn-app-manager.md

@@ -18,6 +18,15 @@ The following table lists the versions of Kubernetes that are compatible with ea
 
 <!--RELEASE_NOTES_PLACEHOLDER-->
 
+## 1.120.2
+
+Released on November 5, 2024
+
+Support for Kubernetes: 1.29, 1.30, and 1.31
+
+### Bug Fixes {#bug-fixes-1-120-2}
+* Fixes an issue where generating a support bundle in air gap kURL environments took a really long time.
+
 ## 1.120.1
 
 Released on November 4, 2024