chore: update changelog with ui entries for 0.20.0 (#6028)

Author: hashicc

CHANGELOG.md

@@ -16,6 +16,11 @@ Canonical reference for changes, improvements, and bugfixes for Boundary.
   This new helper command allows users to authorize sessions against Cassandra 
   targets and automatically invoke a Cassandra client with the appropriate 
   connection parameters and credentials. Currently only username/password credentials are automatically attached.
+* ui: Improved load times for resource tables with search and filtering capabilities by replacing indexeddb for local data storage with sqlite (WASM) and OPFS ([PR](https://github.com/hashicorp/boundary-ui/pull/2984))
+
+### Bug fixes
+* ui: Fixed rendering bug where header for the Host details page rendered multiple times ([PR](https://github.com/hashicorp/boundary-ui/pull/2980))
+* ui: Fixed bug where worker tags could not be removed when creating a new worker ([PR](https://github.com/hashicorp/boundary-ui/pull/2928))
 
 ### Deprecations/Changes