App Manager v1.124.16 release notes (#3213)

* App Manager v1.124.16 release notes

* Update rn-app-manager.md

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Co-authored-by: replicated-ci-kots <91219917+replicated-ci-kots@users.noreply.github.com>
Co-authored-by: Salah Al Saleh <sg.alsaleh@gmail.com>

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-->
 
+## 1.124.16
+
+Released on April 28, 2025
+
+Support for Kubernetes: 1.29, 1.30, and 1.31
+
+### Bug Fixes {#bug-fixes-1-124-16}
+* Fixes an issue where license verification failed unexpectedly with the following error: `failed to verify signature: "IsEmbeddedClusterMultinodeEnabled" field has changed to false (license) from true (within signature)`.
+
 ## 1.124.15
 
 Released on April 14, 2025