update changelog

CHANGELOG.md

@@ -7,14 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ## [Unreleased]
 
 ## [6.0.0]
-### Uncategorized
-- deps: @metamask/utils@^5.0.0->^8.0.0 ([#101](https://github.com/MetaMask/rpc-errors/pull/101))
-- types: Make Data type-parameter optional in JsonRpcError ([#102](https://github.com/MetaMask/rpc-errors/pull/102))
-- Revert "Synchronise package with module template (July 2023) (#98)" ([#98](https://github.com/MetaMask/rpc-errors/pull/98))
-- Synchronise package with module template (July 2023) ([#98](https://github.com/MetaMask/rpc-errors/pull/98))
-- Bump word-wrap from 1.2.3 to 1.2.4 ([#97](https://github.com/MetaMask/rpc-errors/pull/97))
-- Bump semver from 6.3.0 to 6.3.1 ([#96](https://github.com/MetaMask/rpc-errors/pull/96))
-- Bump @metamask/utils from 5.0.1 to 5.0.2 ([#93](https://github.com/MetaMask/rpc-errors/pull/93))
+### Changed
+- Make Data type-parameter optional in JsonRpcError ([#102](https://github.com/MetaMask/rpc-errors/pull/102))
+
+### Fixed
+- `undefined` is now not recognized as valid JSON value
+  - Update dependency `@metamask/utils` from `^5.0.0` to `^8.0.0` ([#101](https://github.com/MetaMask/rpc-errors/pull/101))
 
 ## [5.1.1]
 ### Fixed