Update release notes (#383)

docs/release-notes/version-2.x.md

@@ -3,6 +3,19 @@
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## 2.1.0 - 2024-03-27
+
+### Added
+
+* [#354](https://github.com/nautobot/helm-charts/pull/354) Add persistent volume option for static files
+* [#356](https://github.com/nautobot/helm-charts/pull/356) Allow providing passwords via K8s secret references
+* [#369](https://github.com/nautobot/helm-charts/pull/369) Additional updates for referencing existing K8s secrets
+
+### Fixed
+
+* [#372](https://github.com/nautobot/helm-charts/pull/372) Fix invalid liveness probes in the Nautobot patch released (v1.6.16+ and v2.1.9+)
+
+
 ## 2.0.5 - 2023-11-29
 
 +/- 2.0.5